Aircraft System Reviewer 2

As altitude increases, pressure will (of the air) decreases

Aircraft flying at 10,000 ft to 15,000 ft, due to the reduction pressure and oxygen will experience

Aircraft flying at above 20,000 ft, due to the reduction pressure and oxygen will experience

What is the time of useful consciousness of a pilot doing moderate activity at an altitude 30,000 ft if there is a progressive decompression in the aircraft?

45 secs

Question

Aircraft flying at 15,000 ft to 20,000 ft, due to the reduction pressure and oxygen will experience?

Headache

Where the aircraft passenger seating capacity exceeds 301 but less than 400 then

• 5 megaphones are required.
• 5 megaphones are required.
• 4 extinguishers are required.
• 4 extinguishers are required.

Also known as a crew jacket that may contain communications equipment or a Search and Rescue Beacon.

• PLB

Where the aircraft passenger seating capacity exceeds 100 but less than 200 then

•  
• 2 First-Aid kits are required.

A rotary knife edge ice detector provides warning of ice by:

decreased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit. OR increased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.

• ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.
• ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.
• decreased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit. (ITU DAWS)

The advantage of leading edge fluid de-icing is

• more efficient.
• aerodynamic shape is not disturbed.
• less of a fire hazard.
• less of a fire hazard.

On a Teddington ‘hot rod’ type of ice detector, it is switched on

• all the time.
• all the time.
• when selected by the crew.
• when in the air.
• when in the air.

What is the principle characteristic of a windshield pneumatic rain removal system?

• A pneumatic rain removal system is simply a mechanical windshield wiper system that is powered by pneumatic system pressure.
• An air blast forms a barrier that prevents raindrops from striking the windshield surface.
• An air blasts spreads a liquid rain repellant evenly over the windshield that prevents raindrops from clinging to the glass surface.

What is run-back ice?

• Glaze ice
• Rime ice
• Frost

De-misting of passenger windows is provided by

• sealed window.
• an electrical heating element.
• air from the cabin.

Why are the tubes in deicer boots alternately inflated?

• Alternate inflation of deicer boot tubes keeps disturbance of the airflow to a minimum.
• Alternate inflation of deicer boot tubes does not disturb airflow.
• Alternate inflation of deicer boot tubes relieves the load on the air pump.

Ice formation on wings is due to 

• Suspended ice crystals melting on contact with the wing and instantly re-freezing
• Supercooled water changing state on contact with the wing
• Ice crystals forming layers on contact with the wing.

Some aircraft are protected against airframe heating by  the leading edges of the airfoils and intake ducts. When this type of anti-ice system usually operated during flight?

• Whenever icing conditions are first encountered or expected to occur
• Continuously while the aircraft is in flight
• In symmetric cycles during icing conditions to remove ice as it accumulates

Windshield heating provides

• Increases strength to resist cabin pressure
• Thermal expansion for a tighter fit
• Impact resistance enhancement

It is the period of elapsed time from the exposure to an oxygen-poor environment until the time when the ability to function usefully is likely to be lost at which point an affected individual would no longer be capable of taking normal corrective or protective action.

Identification: 

The Time of Useful Consciousness (TUC)

What is the time of useful consciousness of a pilot doing moderate activity at an altitude 20,000 ft if there is a progressive decompression in the aircraft?

Identification: 5 minutes.

As altitude increases, pressure will identification: decrease

Aircraft flying at above 20,000 ft due to the reduction pressure and oxygen will experience

Identification:

Where the aircraft passenger seating capacity exceeds 149 but less than 200 then

• 2 megaphones are required –
• 1 megaphone is required
• 3 megaphones are required

Also known as a crew jacket that may contain communications equipment or a search and rescue beacon

• PLB
• NRV
• GPS

What is the time of useful consciousness of a pilot doing moderate activity at an altitude 30,000 ft if there is a progressive decompression in  the aircraft? 

Identification:

• 45, segundos

Type which is not sealed and designed for use by cabin crew for the treatment of minor emergencies and ailments.

• First Aid Holdalls

Where the aircraft passenger seating capacity exceeds 149 but less than 200 then

• 2 megaphones are required.
• 3 megaphones are required.
• 1 megaphone is required.

When working in the vicinity of an oxygen system,

• no electrical power must be used. 
• the area must be well ventilated.
• oil must not come into contact with the system.

Cylinders containing purified oxygen for breathing are painted

• black with a white collar.
• white with a black collar.
• black.

What controls the amount of oxygen delivered to a mask in a continuous-flow oxygen system?

• Calibrated orifice. – exams4piots
• Pressure reducing valve.
• Pilot’s regulator.

Ungcle Gwen10nison

Oxygen cylinders are normally fitted with

• oxygen purity gauge.
• temperature gauge.
• pressure and quantity gauges.

The primary difference between aviation breathing oxygen and other types of commercially available compressed oxygen is that

• the other types are usually somewhat less than 99.5% pure oxygen.
• aviation breathing oxygen has had all the water vapor removed. exams4pilot
• aviation breathing oxygen has a higher percentage of water vapor to help prevent drying of a person’s breathing passages and possible dehydration.

What is used in some oxygen systems to change high cylinder pressure to low system pressure?

• Calibrated fixed orifice
• Diluter demand regulator
• Pressure reducer valve

What pressure are oxygen cylinders usually pressurized to?

• 300 psi
• 3000 psi
• 1800 psi

A discharged chemical generator is indicated by

• a protruding pin.
• a change in color.
• a broken tell-tale wire.

Dangerous pressure rises in oxygen cylinders

• is relieved by a thermostat.
• is relieved by under-pressurizing the bottle.
• is relieved by a bursting disc.

Oxygen cylinder test dates

• are variable depending on discharge.
• may be stenciled on the neck of the cylinder.
• are painted in white on the cylinder.

What is the principle characteristic of a windshield pneumatic rain removal system?

• An air blast forms a barrier that prevents raindrops from striking the windshield surface.
• A pneumatic rain removal system is simply a mechanical windshield wiper system that is powered by pneumatic system pressure.
• An air blasts spreads a liquid rain repellant evenly over the windshield that prevents raindrops from clinging to the glass surface.

Air for anti-icing of the wings is obtained from

• engine compressors.
• air conditioning ducting.
• a combustion heater.

Where the aircraft passenger seating capacity exceeds 302 but less than 400 then

• 4 extinguishers are required
• 5 megaphones are required
• 3 megaphones are required

Where the aircraft passenger seating capacity exceeds 100 but less than 200

• 3 first-aid kits are required
• 4 first-aid kits are required
• 2 first-aid kits are required

Windshield rain repellent is applied

• when in heavy rain so vision is unobscured. 
• before rain and spread on window surface by  wipers. 
• when rain is on windows and spread by wipers.

Oxygen cylinder test dates

• Are variable depending on discharge
• May be stenciled on the neck of the cylinder
• Are painted in white on the cylinder.

Glaze ice deposit formed when liquid water flows over the airframe before freezing, and which is dense, tough and sticks closely to the surface is called

• rime ice.
• hoar frost.
• glaze ice.

What controls the amount of oxygen to a mask in a continuous-flow oxygen system?

• Calibrated orifice
• Pilot’s regulator
• Pressure reducing valve

When working in the vicinity of an oxygen system 

• The area must be well ventilated
• Oil must not come into contact with the system
• No electrical power must be used

The purpose of the airflow metering aneroid assembly found in oxygen diluter demand regulators is to

• Regulate airflow in relation to oxygen flow when operating in emergency or diluter demand positions
• Regulate airflow in relation to cabin altitude when diluter demand position
• Automatically put the regulator in emergency position if the demand valve diaphragm ruptures

Oxygen cylinders are normally fitted with

• Oxygen purity gauge
• Temperature gauge
• Pressure and quantity gauges

The dilutor demand regulator functions –

• All the time
• When the user breathes
• Only when the supply valve is opened by the user

IIf an aircraft suddenly drops pressure at 14,000 ft.

• Masks drop automatically
• Attendant must drop masks
• Passenger must get mask from overhead stowage

In the diluter demand oxygen system, selection of emergency on this regulator will result in

• 100% oxygen supply as the user inhales
• 100% oxygen at positive pressure
• 100% oxygen continuous flow at positive pressure

Satisfactory operation of the oxygen systems is indicated by

• Flow indicators
• Pressure indicators
• Lack of anoxia

Oxygen systems in unpressurized aircraft are generally of the 

• Pressure-demand type only
• Continuous-flow and pressure-demand types
• Portable-bottle type only
• Manggang hilaw

In areas closely associated with oxygen systems, particular care must be taken to avoid leaving

• Acrylic based plastic materials
• Magnesium particles
• Traces of oils greases.

Evacuation slide inflation is ensured by?

• A manual pump, used when needed by the cabin crew..
• The aircraft’s general pneumatic circuit.
• Pressurized air from the air conditioning system.
• A pressurized gas canister combined with the slide itself.

Where are the heat sensors located on most airplanes fitted with electrically heated windshields?

• Around the glass.
• Around the glass.
• On the outer pane of the glass.
• On the outer pane of the glass.
• Attached to the glass.
• Attached to the glass.
• Embedded in the glass.

Where are the heat sensors located on most airplanes fitted with electrically heated windshields?

• Embedded in the glass.
• Embedded in the glass.
• Around the glass.
• Around the glass.
• On the outer pane of the glass.
• On the outer pane of the glass.
• Attached to the glass.

Why should a chemical rain repellant not be used on a dry windshield?

• It will etch the glass.
• It will restrict visibility.
• It lessens thermal property of the glass.
• It will cause glass crazing

Chemical oxygen generators are used to furnish oxygen to the?

• Cockpit and the cabin.
• Cockpit and the cabin.
• Cockpit only.
• Cockpit only.
• Cabin only.
• Cabin only.
• Toilets only.

An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least?

• 48 hours

Beneath fire extinguishers the following equipment for fire fighting is on board:

• A big bunch of fire extinguishing blankets.
• A hydraulic winch and a big box of tools.
• Water and all type of beverage.
• Crash axes or crowbars.

What could be symptoms of hypoxia (when flying without oxygen) above 12,000 feet?

• Headache, fatigue, dizziness, lack of coordination.
• Headache, fatigue, dizziness, lack of coordination.
• Euphoria, headache, improvement in judgement, loss of consciousness.
• Euphoria, headache, improvement in judgement, loss of consciousness.
• Trembling, increase in body temperature, convulsions,slowing of the rate of breathing.
• Trembling, increase in body temperature, convulsions,slowing of the rate of breathing.
• Headache, thirst, somnolence, collapse.

How do a pneumatic de-icer boots help remove ice accumulations on the surface of the leading edge?

• By breaking up ice formations

Chemical oxygen generators are used to furnish oxygen to the?

Cabin Only

The emergency lighting system must be able to function and supply a certain level of lighting after the main electric power system has been cut off for at least?

• 10 minutes – hmmm at full brightness for a minimum of 10 mins
• 5 minutes
• 30 minutes
• 90 seconds

In relation to hypoxia, which of the following statements are correct?

• This is a condition of lacking oxygen in the brain causing the circulatory system to compensate by decreasing the heart rate.
• This is a condition of lacking oxygen in the brain causing the circulatory system to compensate by decreasing the heart rate.
• This is a physical condition caused by a lack of oxygen to meet the needs of the body tissues, leading to mental and muscular disturbances, causing impaired thinking, poor judgement and slow reactions.
• This is a physical condition caused by a lack of oxygen to meet the needs of the body tissues, leading to mental and muscular disturbances, causing impaired thinking, poor judgement and slow reactions.
• Hypoxia is often produced during steep turns when pilots turn their heads in a direction opposite to the direction in which the aircraft is turning.
• Hypoxia is often produced during steep turns when pilots turn their heads in a direction opposite to the direction in which the aircraft is turning.
• This is a physical condition caused by a lack of oxygen saturation in the blood while hyperventilating.

What is the procedure above 10,000 feet altitude when faced with explosive decompression?

• Check the cabin altitude, don an oxygen mask and maintain level flight.
• Check the cabin altitude, don an oxygen mask and maintain level flight.
• Don an oxygen mask and descend to below 10,000 feet.

Don an oxygen mask and descend to below 10,000 feet.

• Inform first the air traffic controller.
• Inform first the air traffic controller.
• Descend to below 10,000 feet and signal an emergency.

In the cabin, when the passenger oxygen mask is pulled downwards:

• The passenger breathes cabin air under pressure.
• The passenger breathes cabin air under pressure.
• The passenger breathes a mixture of oxygen and cabin air.
• The passenger breathes a mixture of oxygen and cabin air.
• The passenger breathes pure oxygen under pressure.
• The passenger breathes pure oxygen under pressure.
• The passenger breathes pure oxygen at the ambient pressure.
• The passenger breathes pure oxygen at the ambient pressure.

Where are the heat sensors located on most airplanes fitted with electrically heated windshields?

• On the outer pane of the glass.
• Attached to the glass.
• Embedded in the glass.
• Around the glass.

Which of the following requirements should be met when planning a flight with icing conditions:

The aircraft shall be equipped with approved ice-protection systems

What is the approximate composition of the dry air by volume in the troposphere?

21% oxygen, 78% nitrogen, and the rest other gases.

It is an ice deposit formed when liquid water flows over the airframe before freezing, and which is dense, tough and sticks closely to the surface.

• Glaze ice
• Supercooled droplets
• Rime ice
• Hoar frost

An airplane whose maximum approved passenger seating configuration is 61 to 200 seats must be equipped with at least?

• 5 hand fire-extinguishers conveniently located in the passenger compartment.
• 4 hand fire-extinguishers conveniently located in the passenger compartment.
• 2 hand fire-extinguishers conveniently located in the passenger compartment.
• 3 hand fire-extinguishers conveniently located in the passenger compartment.

Clear ice forms on an aircraft by the freezing of?

• Water vapor.
• Snow.
• Large supercooled water drops.
• Small supercooled water drops.

The correct statement about extinguishing agents on board the airplanes is?

• Halon is an effective extinguishing agent for use in airplanes. 
• A powder extinguisher is suitable for extinguishing a cockpit fire.
• A powder extinguisher is suitable for extinguishing a cockpit fire.
• Water may only be used for minor fires.
• Water may only be used for minor fires.
• Burning cargo in a cargo-aeroplane is usually extinguished by using carbon dioxide.

Some aircrafts are protected against airframe icing by means of heating the leading edges of the airfoils and intake ducts. When is this type of anti-ice system usually operated during flight?

• Whenever icing conditions are first encountered or expected to occur

The state in which the breathing oxygen for the flight deck of jet transport airplanes is stored is?

• Gaseous.
• Liquid
• Chemical compound.
• Gaseous or chemical compound.

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Supplemental oxygen is used to?

• Protect a crew who fights a fire.
• Provide with oxygen passengers who might require it, following a cabin depressurization.
• Provide people on board with oxygen during a cabin depressurization.
• Assist a passenger with breathing disorders.

During an emergency in a ditching situation, the passenger life jackets will be inflated?

• Immediately on ditching.
• Immediately on ditching.
• When leaving the airplane.
• When leaving the airplane.
• Immediately on the opening of the exits.
• Immediately on the opening of the exits.
• Once the passengers are in the water.

In accordance with EASA Operations Regulations, each occupant of the cockpit seats on duty in a non-pressurized airplane cockpit seats on duty in a non-pressurized airplane must have an oxygen supply reserve for the entire flight time at pressure altitudes greater than?

• 10,000 feet.
• 10,000 feet.
• 12,500 feet.
• 12,500 feet.
• 14,000 feet.
• 14,000 feet.
• 13,000 feet. ETO DAWW

The built-in passenger oxygen system on an airplane can be activated by :

• Opening the oxygen-bottle valves.
• Opening the oxygen-bottle valves.
• Switching the diluter demand regulator and the passenger oxygen ON.
• Switching the diluter demand regulator and the passenger oxygen ON.
• Switching the diluter demand regulator ON.
• Switching the diluter demand regulator ON.
• Switching the passenger oxygen ON.

What is the time of useful consciousness?

• The length of time during which an individual can act with both mental and physical efficiency and alertness, measured from the moment at which he loses his available oxygen supply.
• The period of time between the start of hypoxia and the moment that the pilot becomes aware of it.
• The time taken to become aware of hypoxia due to gradual decompression
• Both A and B were correct.

The purpose of the proximity of the emergency evacuation path marking system is to?

• Replace the overhead emergency lighting in case of failure.
• Replace the overhead emergency lighting in case of failure.
• Mark only the exits at the floor level.
• Mark only the exits at the floor level.
• To be used only at night.
• To be used only at night.
• Replace the overhead emergency lighting during an emergency evacuation with a thick smoke.

The volume percentage of oxygen in the atmosphere is 21 percent, in which?

• It is constant for all altitudes conventional airplanes can reach.
• It decreases with increasing altitude.
• It increases with increasing altitude.
• It is dependent on the present air pressure.

From the following list:

1. Fire extinguishers
2. Portable oxygen supplies
3. First-aid kits
4. Passenger meals
5. Alcoholic beverages

Which are classed as Dangerous Goods that are required to be on the aeroplane in accordance with relevant JAR’s for operating reasons?

• 1,2, and 3 only 

During an aircraft de-icing/anti-icing procedure:

• The de-icing fluid is applied without heating and the anti-icing fluid is applied hot.
• The de-icing fluid is applied without heating and the anti-icing fluid is applied hot.
• The anti-icing fluid is applied without heating and the de-icing fluid is applied hot.
• The anti-icing fluid is applied without heating and the de-icing fluid is applied hot.
• The anti-icing and de-icing fluids are applied hot.
• The anti-icing and de-icing fluids are applied hot.
• The anti-icing and de-icing fluids are applied hot.

The procedure to be followed in the event of airplane sudden decompression when flying above 10,000 feet must:

• Allow for a rapid descent independent from sufficient supply of oxygen in order to prevent disorders due to hypoxia.
• Allow for a rapid descent independent from sufficient supply of oxygen in order to prevent disorders due to hypoxia.
• Make it possible to eliminate the risk of fogging due to the sudden pressure changes.
• Make it possible to eliminate the risk of fogging due to the sudden pressure changes.
• Allow for the rapid supply of oxygen in order to prevent the pilot becoming hypoxic.
• Allow for the rapid supply of oxygen in order to prevent the pilot becoming hypoxic.
• Make it possible to prevent hyperventilation owing to the inhalation of 100% oxygen.

Evacuation slide inflation is ensured by?

• The aircraft’s general pneumatic circuit.
• A manual pump, used when needed by the cabin crew.
• Pressurized air from the air conditioning system.
• A pressurized gas canister combined with the slide itself.

The purpose of a diluter demand regulator in an aircraft oxygen system is to?

• Deliver oxygen flow when inhaling.
• Deliver oxygen flow when inhaling.
• Deliver oxygen flow only above 10,000 feet.
• Deliver oxygen flow only above 10,000 feet.
• Is only recommended with smoke in the cockpit.
• Is only recommended with smoke in the cockpit.
• Mix air and oxygen in a passenger oxygen mask.

The advantages of a gaseous oxygen source for the passenger cabin are:

1. No risk of explosion.
2. Reversible functioning.
3. Possibility to regulate flow.
4. A greater autonomy.
5. Easy storage and maintenance.

The type of an aircraft oxygen system intended for use by passengers, is mostly?

• portable equipment only
• an air recycle system
• a pressure demand system
• a continuous flow system

Ice formation on wings is due to?

• Thermal source from the leading edge.
• Thermal source from the leading edge.
• Supercooled water changing state on contact with the wing.
• Supercooled water changing state on contact with the wing.
• Ice crystals forming layers on contact with the wing.
• Ice crystals forming layers on contact with the wing.
• Suspended ice crystals melting on contact with the wing and instantly re-freezing.

The purpose of the first aid oxygen is to?

• provide the flight crew with respiratory assistance after depressurization
• provide the flight crew with respiratory assistance after depressurization
• supply all the passengers in case of depressurization
• supply all the passengers in case of depressurization
• provide some passengers with additional respiratory assistance after an emergency descent following a depressurization
• provide some passengers with additional respiratory assistance after an emergency descent following a depressurization
• provide the cabin attendants with respiratory protection

Air used for anti-icing of the wings is obtained from?

• A combustion heater.
• A combustion heater.
• Engine compressors.
• Engine compressors.
• Air conditioning ducting.
• Air conditioning ducting.
• Air cycle machine.

The most dangerous symptoms of hypoxia at altitude are?

• Hyperventilation.
• Hyperventilation.
• Breathlessness and reduced night vision.
• Breathlessness and reduced night vision.
• Sensation of heat and blurred vision.
• Sensation of heat and blurred vision.
• Euphoria and impairment of judgement.

In accordance with EASA Regulations, when an airplane flies at over 25,000 feet, the total number of oxygen dispensing units and supply terminals must be at least greater than the number of?

• Seats by 30 percent.
• Seats by 30 percent.
• Passengers by 10 percent.
• Passengers by 10 percent.
• Seats by 10 percent.
• Seats by 10 percent.
• Passengers by 30 percent.

What is the time of useful consciousness at 20,000 feet?

• 5 to 10 minutes.
• 5 to 10 minutes.
• 1 to 2 hours.
• 1 to 2 hours.
• 1 to 2 minutes.
• 1 to 2 minutes.
• About 30 minutes.

What mixture may be used as a de-icing fluid to remove frost from an aircraft surface?

• Methyl ethyl ketone and ethylene glycol.
• Methyl ethyl ketone and ethylene glycol.
• Ethylene glycol and isopropyl alcohol.
• Ethylene glycol and isopropyl alcohol.
• Ethyl alcohol and isopropyl alcohol.
• Ethyl alcohol and isopropyl alcohol.
• Naptha and isopropyl alcohol.

At what altitude (breathing 100% oxygen without pressure) could symptoms of hypoxia be expected?

• Approximately 10,000 to 12,000 feet.
• Approximately 10,000 to 12,000 feet.
• Approximately 35,000 feet.
• Approximately 35,000 feet.
• Approximately 38,000 to 40,000 feet.
• Approximately 38,000 to 40,000 feet.
• Approximately 22,000 feet.

These are the two (2) possible sources of heat for the operation of a wing thermal anti-icing system.

• Compressor bleed air and aircraft electrical system.
• Compressor bleed air and aircraft electrical system.
• Cabin air and air turbine motor.
• Cabin air and air turbine motor.
• First stage of the air cycle turbine an turbo compressor.
• First stage of the air cycle turbine an turbo compressor.
• Combustion heater and exhaust gases.

Which of the following statements is true regarding moderate-to-severe airframe icing?

• It always occurs in altostratus cloud.
• It always occurs in altostratus cloud.
• It will occur in clear-sky conditions.
• It will occur in clear-sky conditions.
• It may occur in the uppermost levels of a cumulonimbus capillatus formation.
• It may occur in the uppermost levels of a cumulonimbus capillatus formation.
• It is likely to occur in nimbostratus cloud.

For aeroplanes having a seating capacity of more than 44 passengers, it must be shown by actual demonstration that the maximum seating capacity, including the required number of crew members, can be evacuated from the aeroplane to the ground in?

• 90 seconds

The “effective performance time” or “time of useful consciousness” after a decompression at 35,000 feet is?

• Between 30 and 60 seconds.
• Approximately 5 minutes.
• Less than 20 seconds.
• Approximately 3 minutes.

On board a pressurized aircraft, a flight shall be undertaken only if the aircraft is provided with an oxygen reserve enabling all the crew members and part of the passengers to be supplied with oxygen in the event of a cabin depressurization, throughout the flight period, during which the pressure altitude is greater than?

• 12,000 feet
• 11,000 feet
• 10,000 feet
• 13,000 feet

When air is compressed for pressurization purposes, the percentage oxygen content is?

• Unaffected.

Air at an altitude of 18,000 feet contains, approximately?

• 10 percent oxygen.
• 10 percent oxygen.
• 21 percent oxygen.
• 21 percent oxygen.
• 5 percent oxygen.
• 5 percent oxygen.
• 15 percent oxygen.

An aircraft whose maximum approved configuration for passenger seats is 10 seats must be equipped with?

• Three fire-extinguishers in the passenger cabin only.
• Three fire-extinguishers in the passenger cabin only.
• One fire-extinguisher in the cockpit and two fire-extinguishers in the passenger cabin.
• One fire-extinguisher in the cockpit and two fire-extinguishers in the passenger cabin.
• One fire-extinguisher in the cockpit and three fire-extinguishers in the passenger cabin.
• One fire-extinguisher in the cockpit and three fire-extinguishers in the passenger cabin.
• Two fire-extinguishers in the cockpit and two fire-extinguishers in the passenger cabin.

The number of emergency exits in transport airplanes:

• Depends on the decision of the manufacturer in agreement with the operator.
• Must be in accordance with the number of passengers on board.
• Must be arranged to allow at least 50% of all passengers to leave the aeroplane within 2 minutes.
• Must be arranged to allow all passengers and all crew members to leave the aeroplane within 90 seconds through 50% of the available emergency exits.

During flight, the wing anti-ice system has to protect?

• Slats and the leading edge flaps only.
• Slats and the leading edge flaps only.
• Leading edges only.
• Leading edges only.
• The whole upper wing surface and the flaps.
• The whole upper wing surface and the flaps.
• Leading edges, slats and the leading edge flaps.

Hoar frost forms on an aircraft as a result of?

• Small super-cooled droplets striking the aircraft.
• Freezing rain striking the aircraft.
• Water vapor turning directly into ice crystals on the aircraft surface.
• Droplets forming on the aircraft and then freezing.

Airplane windshield heating provides?

• Impact resistance enhancement.

The emergency lighting system must be able to function and supply a certain level of lighting after the main electric power system has been cut off for at least?

• 10 minutes

In case of smoke in the cockpit, the crew oxygen regulator must be set to:

• 100 percent.
• Normal.
• On demand.
• Emergency.

Why are the tubes in a de-icer boots alternately inflated? 

• Alternate inflation of de-icer boot tubes keeps disturbance of the airflow to a minimum.
• Alternate inflation of de-icer boot tubes keeps disturbance of the airflow to a minimum.
• Alternate inflation of de-icer boot tubes does not disturb airflow.
• Alternate inflation of de-icer boot tubes does not disturb airflow.
• Alternate inflation of de-icer boot tubes relieves the load on the air pump.
• Alternate inflation of de-icer boot tubes relieves the load on the air pump.
• Both B and C are correct.

To use passengers oxygen in case of severe cabin smoke is?

• Useless because the toxical cabin smoke is mixed with the breathing oxygen.
• Useless because the toxical cabin smoke is mixed with the breathing oxygen.
• Useless because the oxygen units do not operate under smoke conditions.
• Useless because the oxygen units do not operate under smoke conditions.
• Useless because breathing oxygen would explode under smoke conditions.
• Useless because breathing oxygen would explode under smoke conditions.
• Possible and recommended.

What mixture may be used as a de-icing fluid to remove frost from an aircraft surface?

• Ethylene glycol and isopropyl alcohol
• Methyl ethyl ketone and ethylene glycol.
• Ethyl alcohol and isopropyl alcohol.
• Naptha and isopropyl alcohol.

Which of the following statements is true regarding moderate-to-severe airframe icing?

• It always occurs in altostratus cloud.
• It always occurs in altostratus cloud.
• It is likely to occur in nimbostratus cloud.
• It is likely to occur in nimbostratus cloud.
• It will occur in clear-sky conditions.
• It will occur in clear-sky conditions.
• It may occur in the uppermost levels of a cumulonimbus capillatus formation 

The greatest possibility of ice buildup, while flying under icing conditions, occurs on?

• The aircraft front areas

For the flight crew members, quickly-fitted oxygen masks are compulsory on board any pressurized aircraft flying at a pressure altitude greater than:

• 29,000 feet
• 13,000 feet
• 25,000 feet
• 10,000 feet

The type of a aircraft oxygen system intended for use by passengers, is mostly?

• an air recycle system
• an air recycle system
• portable equipment only
• portable equipment only
• a continuous flow system
• a continuous flow system
• a pressure demand system

What is hypoxia?

• The respiratory symptom associated with altitude decompression sickness.
• The respiratory symptom associated with altitude decompression sickness.
• A state charcterised by an excessive supply of oxygen which may be due to maladjustment of the mask.
• A state charcterised by an excessive supply of oxygen which may be due to maladjustment of the mask.
• Any condition where the oxygen concentration of the body is below normal limits or where the oxygen available to the body cannot be used due to some pathological condition.
• Any condition where the oxygen concentration of the body is below normal limits or where the oxygen available to the body cannot be used due to some pathological condition.
• All of the above.

Rime ice forms through the freezing onto aircraft surfaces of?

• snow
• large supercooled water drops
• water vapour
• small supercooled water drops

Altitude-hypoxia, when breathing ambient air, should not occur (indifferent phase) at altitudes:

• Between 3,000 to 5,000 meters
• Between 3,000 to 5,000 meters
• Up to 5 ,000 meters.
• Up to 5 ,000 meters.
• Below 3,000 meters.
• Below 3,000 meters.
• Between 5,000 to 7,000 meters.

How does freezing rain develop?

• Through melting of ice crystals.
• Through melting of ice crystals.
• Through melting of sleet grains.
• Through melting of sleet grains.
• Rain falls through a layer where temperatures are below 0°C.
• Rain falls through a layer where temperatures are below 0°C.
• Rain falls on cold ground and then freezes.
• Rain falls on cold ground and then freezes.

Which of the following statements are correct?

1. Oxygen use in aircraft systems is at least 99.5 percent pure and is practically water free.
2. Oxygen used in aircraft systems is 99.5 percent pure and of hospital quality.

• Both no. 1 and no. 2 are wrong.
• Both no. 1 and no. 2 are wrong.
• Both no. 1 and no. 2 are correct.
• Both no. 1 and no. 2 are correct.
• Only no. 1 is correct.
• Only no. 1 is correct.
• Only no. 2 is correct.

What is the time of useful consciouness?

• The length of time during which an individual can act with both mental and physical efficiency and alertness, measured from the moment at which he loses his available oxygen supply.
• The period of time between the start of hypoxia and the moment that the pilot becomes aware of it.
• The time taken to become aware of hypoxia due to gradual decompression
• Both A and B were correct.

A life jacket is mandatory for any passenger on board an aircraft flying away from the shore by more than?

• 200 Nautical miles
• 200 Nautical miles
• 400 Nautical miles
• 400 Nautical miles
• 100 Nautical miles
• 100 Nautical miles
• 50 Nautical miles

Following an explosive decompression, the maximum altitude without oxygen at which flying efficiency is not impaired is?

• 14,000 feet
• 14,000 feet
• 8,000 feet
• 8,000 feet
• 3,000 feet
• 3,000 feet
• 25,000 feet (according to theairlinepilots.com)

During an emergency in a ditching situation, the passenger life jackets will be inflated?

• Once the passengers are in the water..
• Immediately on the opening of the exits.
• Immediately on ditching.
• When leaving the airplane.

In accordance with EASA Regulations, when an airplane flies at over 25,000 feet, the total number of oxygen dispensing units and supply terminals must be at least greater than the number of?

• Seats by 10 percent.
• Passengers by 30 percent.
• Seats by 30 percent.
• Passengers by 10 percent. 

Hoar frost forms on an aircraft as a result of

water vapour turning directly into ice crystals on the aircraft surface

Which is an advantage of leading edge fluid de-icing method?

• The aerodynamic shape is not disturbed.
• There is less of a fire hazard.
• It is more efficient.
• All of the above.

The advantages of a gaseous oxygen source for the passenger cabin are:

1. No risk of explosion.
2. Reversible functioning.
3. Possibility to regulate flow.
4. A greater autonomy.
5. Easy storage and maintenance.

Which of the following statements are correct?

• 2, 3 and 4 are correct.
• 1, 3 and 5 are correct.
• 1, 4 and 5 are correct.
• 1, 2, 3 and 5 are correct.

On board a pressurized aircraft, a flight shall be undertaken only if the aircraft is provided with an oxygen reserve enabling all the crew members and part of the passengers to be supplied with oxygen in the event of a cabin depressurization, throughout the flight period, during which the pressure altitude is greater than?

• 11,000 feet
• 10,000 feet
• 12,000 feet
• 13,000 feet

What is hypoxia?

• The respiratory symptom associated with altitude decompression sickness.
• A state charcterised by an excessive supply of oxygen which may be due to maladjustment of the mask.
• Any condition where the oxygen concentration of the body is below normal limits or where the oxygen available to the body cannot be used due to some pathological condition.
• All of the above.

If smoke appears in the air conditioning system of the aircraft, the first action to take is to?

• Put on the mask and goggles.
• Determine which system is causing the smoke.
• Begin an emergency descent. 

The greatest possibility of ice buildup, while flying under icing conditions, occurs on?

• Only the pitot and static probes.
• The upper and lower rudder surfaces.
• The aircraft front areas.
• The upper and lower wing surfaces. 

Some aircrafts are protected against airframe icing by means of heating the leading edges of the airfoils and intake ducts. When is this type of anti-ice system usually operated during flight?

• Whenever icing conditions are first encountered or expected to occur.
• During take off and landing.
• In symmetric cycles during icing conditions to remove ice as ir accumulates.
• Continuously while the aircraft is in flight.

The procedure to be followed in the event of airplane sudden decompression when flying above 10,000 feet must:

• Make it possible to prevent hyperventilation owing to the inhalation of 100% oxygen.
• Allow for a rapid descent independent from sufficient supply of oxygen in order to prevent disorders due to hypoxia.
• Make it possible to eliminate the risk of fogging due to the sudden pressure changes.
• Allow for the rapid supply of oxygen in order to prevent the pilot becoming hypoxic.

The most dangerous symptoms of hypoxia at altitude are?

• Breathlessness and reduced night vision.
• Hyperventilation.
• Sensation of heat and blurred vision.
• Euphoria and impairment of judgement.

(1) Oxygen used in aircraft systems is at least 99.5 percent pure and is practically water free.

(2) Oxygen used in aircraft systems is 99.5 percent pure and is hospital quality.

Regarding the above statements,

	A) both No. 1 and No. 2 are true.t
	B) neither No. 1 nor No. 2 is true.
*	C) only No. 1 is true.

An airplane whose maximum approved passenger seating configuration is 61 to 200 seats must be equipped with at least?

• 2 hand fire-extinguishers conveniently located in the passenger compartment.
• 3 hand fire-extinguishers conveniently located in the passenger compartment.
• 4 hand fire-extinguishers conveniently located in the passenger compartment.
• 5 hand fire-extinguishers conveniently located in the passenger compartment.

Which of the following statements is true regarding moderate-to-severe airframe icing?

• It will occur in clear-sky conditions.
• It always occurs in altostratus cloud.
• It is likely to occur in nimbostratus cloud.
• It may occur in the uppermost levels of a cumulonimbus capillatus formation.

During flight, the wing anti-ice system has to protect?

• Slats and the leading edge flaps only.
• Leading edges, slats and the leading edge flaps.
• Leading edges only.
• The whole upper wing surface and the flaps.

The purpose of a diluter demand regulator in an aircraft oxygen system is to?

• Deliver oxygen flow when inhaling.
• Deliver oxygen flow only above 10,000 feet.
• Is only recommended with smoke in the cockpit.
• Mix air and oxygen in a passenger oxygen mask.

The accumulation of snow or ice on an aircraft in flight induces an increase in the?

• roll rate
• stalling speed
• value of the stall angle of attack
• tuck under 

Where are the heat sensors located on most airplanes fitted with electrically heated windshields?

• Embedded in the glass.
• Around the glass.
• Attached to the glass.
• On the outer pane of the glass.
•  

The correct statement about extinguishing agents on board the airplanes is?

• Water may only be used for minor fires.
• A powder extinguisher is suitable for extinguishing a cockpit fire.
• Halon is an effective extinguishing agent for use in airplanes.
• Burning cargo in a cargo-aeroplane is usually extinguished by using carbon dioxide.

In accordance with EASA Operations Regulations, each occupant of the cockpit seats on duty in a non-pressurized airplane cockpit seats on duty in a non-pressurized airplane must have an oxygen supply reserve for the entire flight time at pressure altitudes greater than?

• 12,500 feet.
• 14,000 feet.
• 13,000 feet.
• 10,000 feet.pressuri

An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least?

• 72 hours
• 36 hours
• 48 hours
• 24 hours

These are the two (2) possible sources of heat for the operation of a wing thermal anti-icing system.

• First stage of the air cycle turbine an turbo compressor.
• Combustion heater and exhaust gases.
• Compressor bleed air and aircraft electrical system.
• Cabin air and air turbine motor.
•  

In accordance with EASA Regulations, when an airplane flies at over 25,000 feet, the total number of oxygen dispensing units and supply terminals must be at least greater than the number of?

• Passengers by 30 percent.
• Passengers by 10 percent.
• Seats by 10 percent.
• Seats by 30 percent.

Supplemental oxygen is used to?

• Provide people on board with oxygen during a cabin depressurization.
• Protect a crew who fights a fire.
• Provide with oxygen passengers who might require it, following a cabin depressurization.
• Assist a passenger with breathing disorders.

To use passengers oxygen in case of severe cabin smoke is?

• Useless because the oxygen units do not operate under smoke conditions.
• Possible and recommended.
• Useless because breathing oxygen would explode under smoke conditions.
• Useless because the toxical cabin smoke is mixed with the breathing oxygen.

Rime ice forms through the freezing onto aircraft surfaces of?

• small supercooled water drops
• water vapour
• large supercooled water drops
• snow

In accordance with EASA Regulations, when an airplane flies at over 25,000 feet, the total number of oxygen dispensing units and supply terminals must be at least greater than the number of?

• Seats by 10 percent.
• Seats by 30 percent.
• Passengers by 30 percent.
• Passengers by 10 percent.

Air at an altitude of 18,000 feet contains, approximately?

• 10 percent oxygen.
• 10 percent oxygen.
• 5 percent oxygen.
• 5 percent oxygen.
• 15 percent oxygen.F
• 15 percent oxygen.
• 21 percent oxygen.
• 21 percent oxygen.

Why should a chemical rain repellant not be used on a dry windshield?

• It lessens thermal property of the glass.
• It lessens thermal property of the glass.
• It will cause glass crazing.
• It will cause glass crazing.
• It will etch the glass.
• It will etch the glass.
• It will restrict visibility.

How does a rotary knife edge ice detector provides warning of ice formation?

• By increased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.
• By increased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.
• By decreased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.
• By ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.
• By ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.
• Both A and B are correct.

The purpose of the proximity of the emergency evacuation path marking system is to?

• Replace the overhead emergency lighting during an emergency evacuation with a thick smoke.
• To be used only at night.
• Replace the overhead emergency lighting in case of failure.
• Mark only the exits at the floor level.

The volume percentage of oxygen in the atmosphere is 21 percent, in which?

• It increases with increasing altitude.
• It is dependent on the present air pressure.
• It is constant for all altitudes conventional airplanes can reach.
• It decreases with increasing altitude.

The emergency lighting system must be able to function and supply a certain level of lighting after the main electric power system has been cut off for at least?

• 5 minutes
• 90 seconds
• 30 minutes
• 10 minutes 

Which of the following statements are correct?

1. Oxygen use in aircraft systems is at least 99.5 percent pure and is practically water free.
2. Oxygen used in aircraft systems is 99.5 percent pure and of hospital quality.

• Only no. 2 is correct.
• Only no. 1 is correct.
• Both no. 1 and no. 2 are wrong.
• Both no. 1 and no. 2 are correct.

How does a rotary knife edge ice detector provides warning of ice formation?

• By increased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.
• By decreased torque caused by ice formation slowing the rotating wheel and illuminating a warning light in the cockpit.
• By ice formation stopping the rotation of a rotary knife edge and illuminating a warning light in the cockpit.
• Both A and B are correct.

It is an ice deposit formed when liquid water flows over the airframe before freezing, and which is dense, tough and sticks closely to the surface.

• Glaze ice
• Supercooled droplets
• Hoar frost
• Rime ice

What is the time of useful consciousness at 20,000 feet?

• 5 to 10 minutes.
• About 30 minutes.
• 1 to 2 hours.
• 1 to 2 minutes.

Evacuation slide inflation is ensured by?

• A pressurized gas canister combined with the slide itself.

Chemical oxygen generators are used to furnish oxygen to the?

• Cockpit and the cabin.
• Cockpit only.
• Cabin only.
• Toilets only.

The “effective performance time” or “time of useful consciousness” after a decompression at 35,000 feet is?

• Less than 20 seconds.
• Approximately 5 minutes.
• Between 30 and 60 seconds.
• Approximately 3 minutes.

The type of a aircraft oxygen system intended for use by passengers, is mostly?

• an air recycle system
• a continuous flow system
• portable equipment only
• a pressure demand system

When air is compressed for pressurization purposes, the percentage oxygen content is?

• Decreased.
• Increased.
• Dependent on the degree of pressutime of userization.
• Unaffected.

What could be symptoms of hypoxia (when flying without oxygen) above 12,000 feet?

• Headache, thirst, somnolence, collapse.
• Trembling, increase in body temperature, convulsions,slowing of the rate of breathing.
• Headache, fatigue, dizziness, lack of coordination.
• Euphoria, headache, improvement in judgement, loss of consciousness.

What is the time of useful consciouness?

• The length of time during which an individualcan act with both mental and physical efficiency and alertness, measured from the moment at which he loses his available oxygen supply.
• The period of time between the start of hypoxia and the moment that the pilot becomes aware of it.
• The time taken to become aware of hypoxia due to gradual decompression
• Both A and B were correct. 

At what altitude (breathing 100% oxygen without pressure) could symptoms of hypoxia be expected?

• Approximately 10,000 to 12,000 feet.
• Approximately 22,000 feet.
• Approximately 38,000 to 40,000 feet.
• Approximately 35,000 feet.

The volume percentage of oxygen in the atmosphere is 21 percent, in which?

• It is constant for all altitudes conventional airplanes can reach.
• It is dependent on the present air pressure.
• It decreases with increasing altitude.
• It increases with increasing altitude.

An emergency locator transmitter (ELT) battery must be capable of furnishing power for signal transmission for at least?

• 24 hours
• 72 hours
• 36 hours
• 48 hours

Why are the tubes in a de-icer boots alternately inflated? 

• Alternate inflation of de-icer boot tubes keeps disturbance of the airflow to a minimum.
• Alternate inflation of de-icer boot tubes does not disturb airflow.
• Alternate inflation of de-icer boot tubes relieves the load on the air pump.
• Both B and C are correct.

What could be symptoms of hypoxia (when flying without oxygen) above 12,000 feet?

Trembling, increase in body temperature, convulsions,slowing of the rate of breathing.

Headache, thirst, somnolence, collapse.

Headache, fatigue, dizziness, lack of coordination.

Euphoria, headache, improvement in judgement, loss of consciousness.

For the flight crew members, quickly-fitted oxygen masks are compulsory on board any pressurized aircraft flying at a pressure altitude greater than:

• 25,000 feet
• 29,000 feet
• 13,000 feet 
• 10,000 feet

De-misting of passenger windows is provided by?

• Sealed window.
• An electrical heating element. 
• An air turbine motor.
• Air from the cabin.

For aeroplanes having a seating capacity of more than 44 passengers, it must be shown by actual demonstration that the maximum seating capacity, including the required number of crew members, can be evacuated from the aeroplane to the ground in?

• 240 seconds
• 60 seconds
• 120 seconds
• 90 seconds

The purpose of the first aid oxygen is to?

• provide the flight crew with respiratory assistance after depressurization
• provide some passengers with additional respiratory assistance after an emergency descent following a depressurization
• provide the cabin attendants with respiratory protection
• supply all the passengers in case of depressurization

Supplemental oxygen is used to?

• Provide with oxygen passengers who might require it, following a cabin depressurization.
• Provide people on board with oxygen during a cabin depressurization.
• Assist a passenger with breathing disorders.
• Protect a crew who fights a fire.

From the following list:

1. Fire extinguishers
2. Portable oxygen supplies
3. First-aid kits
4. Passenger meals
5. Alcoholic beverages

Which are classed as Dangerous Goods that are required to be on the aeroplane in accordance with relevant JAR’s for operating reasons?

• 1,2 and 5 only
• 2,3 and 4 only
• 1,2 and 3 only
• 3,4 and 5 only

In the cabin, when the passenger oxygen mask is pulled downwards:

• The passenger breathes pure oxygen under pressure.
• The passenger breathes cabin air under pressure.
• The passenger breathes pure oxygen at the ambient pressure.
• The passenger breathes a mixture of oxygen and cabin air.

Airplane windshield heating provides?

• Impact resistance enhancement.
• Lesser vibration during flight.
• Increases strength to resist cabin pressure.
• Thermal expansion for a tighter fit.

Why should a chemical rain repellant not be used on a dry windshield?

• It will restrict visibility.
• It lessens thermal property of the glass.
• It will cause glass crazing.
• It will etch the glass.

Which of the following requirements should be met when planning a flight with icing conditions:

• The aircraft shall be equipped with approved ice-protection systems.
• The aircraft shall before flight be sprayed with anti-icing fluid.
• A meterologist shall decide whether the flight may be performed without ice-protection systems.
• The flight should be planned so that a change of cruising level can be initiated rapidly.

During an aircraft de-icing/anti-icing procedure:

• The anti-icing and de-icing fluids are applied hot.The de-icing fluid is applied without heating and the anti-icing fluid is applied hot.
• The anti-icing fluid is applied without heating and the de-icing fluid is applied hot.
• The anti-icing and de-icing fluids are applied hot.

Air used for anti-icing of the wings is obtained from?

• Engine compressors.
• A combustion heater.
• Air conditioning ducting.
• Air cycle machine.

Where are the heat sensors located on most airplanes fitted with electrically heated windshields?

• Embedded in the glass.

At what altitude (breathing 100% oxygen without pressure) could symptoms of hypoxia be expected?

• Approximately 22,000 feet.
• Approximately 10,000 to 12,000 feet.
• Approximately 38,000 to 40,000 feet.
• Approximately 35,000 feet.

An airplane whose maximum approved passenger seating configuration is 61 to 200 seats must be equipped with at least?

• 4 hand fire-extinguishers conveniently located in the passenger compartment.
• 3 hand fire-extinguishers 
• conveniently located in the passenger compartment.
• 2 hand fire-extinguishers conveniently located in the passenger compartment.
• 5 hand fire-extinguishers conveniently located in the passenger compartment.

An airplane whose maximum approved passenger seating configuration is 61 to 200 seats must be equipped with at least?

A: 3

From the following list:

1. Fire extinguishers
2. Portable oxygen supplies
3. First-aid kits
4. Passenger meals
5. Alcoholic beverages

Ans: 1,2,3 are correct

Which are classed as Dangerous Goods that are required to be on the aeroplane in accordance with 

relevant JAR’s for operating reasons?

• 2,3 and 4 only
• 2,3 and 4 only
• 1,2 and 3 only
• 1,2 and 3 only
• 3,4 and 5 only
• 3,4 and 5 only
• 1,2 and 5 only

Beneath fire extinguishers the following equipment for fire fighting is on board:

• Water and all type of beverage.
• A big bunch of fire extinguishing blankets.
• A hydraulic winch and a big box of tools.
• Crash axes or crowbars.

The purpose of a diluter demand regulator in an aircraft oxygen system is to?

• Mix air and oxygen in a passenger oxygen mask.
• Is only recommended with smoke in the cockpit.
• Deliver oxygen flow only above 10,000 feet.
• Deliver oxygen flow when inhaling.

The built-in passenger oxygen system on an airplane can be activated by :

• Switching the passenger oxygen ON.

The purpose of the diluter demand regulator and oxygen system is to

Deliver oxygen flow when inhaling

What is the time of useful consciousness at 20,000 feet?

5 to 10 minutes

The greatest possibility of ice buildup, while flying under icing conditions, occurs on?

• The upper and lower rudder surfaces.
• The aircraft front areas.
• Only the pitot and static probes.
• The upper and lower wing surfaces.

Chemical oxygen generators are used to furnish oxygen to the

Cabin only

The state in which the breathing oxygen for the flight deck of jet transport airplanes is stored is?

• Liquid.
• Gaseous.
• Gaseous or chemical compound.
• Chemical compound.

Altitude-hypoxia, when breathing ambient air, should not occur (indifferent phase) at altitudes:

Below 3,000 meters.

Q:When air is compressed for pressurization purposes, the percentage oxygen content is?

A:Unaffected

Q:The purpose of the proximity of the emergency evacuation path marking system is to?

A:Replace the overhead emergency lighting during an emergency evacuation with a thick smoke.

Q: Following an explosive decompression, the maximum altitude without oxygen at which flying efficiency is not impaired is?

A:

Q:Ice formation on wings is due to?

A:Supercooled water changing state on contact with the wing (not sure)

Q: How does freezing rain develop?

A:Rain falls through a layer where temperatures are below 0°C.

The state in which the breathing oxygen for the flight deck of jet transport airplanes is stored is?

A: Liquid Not sure

A: Gaseous temperature has to be -119° (Tcrit) minimum so GASEOUS NALANG?

Q: In case of smoke in the cockpit, the crew oxygen regulator must be set to:
A: Emergency

Q: What is the procedure above 10,000 feet altitude when faced with explosive decompression?

A:

Q: Clear ice forms on an aircraft by the freede-icer bootzing of?

What is the approximate composition of the dry air by volume in the troposphere?

• 50% oxygen, 40% nitrogen, and the rest other gases.
• 88% oxygen, 9% nitrogen, and the rest other gases.
• 21% oxygen, 78% nitrogen, and the rest other gases.
• 10% oxygen, 89% nitrogen, and the rest other gases.

Q:Why are the tubes in a de-icer boots alternately inflated? 

A: Alternate inflation of de-icer boot tubes keeps disturbance of the airflow to a minimum.

emergency exit

Q:The “effective performance time” or “time of useful consciousness” after a decompression at 35,000 feet is?

A:Between 30 and 60 seconds.

Q: How do a pneumatic de-icer boots help remove ice accumulations on the surface of the leading edge?

A:By breaking up ice formations

Q:Which of the following statements is true regarding moderate-to-severe airframe icing?
A:  wala pang sagot

Q: In a diluter demand oxygen system,

• oxygen is supplied with a continuous pressure flow.
• each member of the crew has a regulator.
• each member of the crew has a continuous oxygen supply. 

Q: In relation to hypoxia, which of the following statements are correct?

A:This is a condition of lacking oxygen in the brain causing the circulatory system to compensate by decreasing the heart rate.

Q: The number of emergency exits in transport airplanes: 

• Must be in accordance with the number of passengers on board.
• Must be arranged to allow at least 50% of all passengers to leave the aeroplane within 2 minutes.
• Depends on the decision of the manufacturer in agreement with the operator.
• Must be arranged to allow all passengers and all crew members to leave the aeroplane within 90 seconds through 50% of the available emergency exits.

Clear ice forms on an aircraft by the freezing of?

• Large supercooled water drops.
• Water vapor.
• Small supercooled water drops.
• Snow