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Aircraft Systems Reviewer 3

If the profile grooves or tread of an aircraft tire are already worn out, the tire can be?
Repaired once.

One method of minimizing the possibility of tire creep would be?
The wheel incorporating a tapered knurled flange.

An aircraft composite brake units:

The torsion box of a modern aircraft wing structure consists of?

  • Stringers, ribs, skin and spars.

A torque link is a component found on aircraft landing gears. Its function is?

  • To prevent any rotation of the oleo strut in the undercarriage shock absorber.

Prevention of tire scrubbing while the aircraft is maneuvering on the ground. 

  • Turn no sharper than the minimum specified radius.

What opposes buckling in a semi-monocoque structure?

  • Stringers

The purpose of the loose flange on an aircraft wheel is to?

  • Facilitate tire replacement.

What will happen on fusible plugs installed in some aircraft wheels?

  • It will melt at a specified elevated temperature.

A piece of formed sheet metal or extrusion riveted to a larger piece of thin sheet metal to give it rigidity and stiffness.

  • Stringer

Ram air turbine hydraulic pump is commonly used for?

  • Flight controls if the hydraulic power is lost. 

This is the type of hydraulic fluid which has the highest resistance against cavitation:

  • Synthetic based fluid

What would be the effect of creep on aircraft tires?

  • Can rip out the inflation valve and deflate the tire.

The part of the flight that will cause the highest loads on the torsion link in a bogie gear.

  • During taxiing with a small turning radius.

Portable oxygen cylinders are normally charged to? 

A) 1,200 psi C) 2,000 psi    B) 1,800 psi D) 2,500 psi 

______ 2. In a continuous flow oxygen system, oxygen is supplied: 

  1. When the mask is plugged into the socket. —
  2. Only when the supply has been regulated by the pilot. 
  3. On passenger inhaling into the mask. 
  4. All of the above are correct. 

______ 3. If oxygen is not being supplied in normal flight conditions, the cabin altitude must be? 

  1. Below 10,000 feet.  C) At a maximum of 12,000 feet. 
  2. At or below 8,000 feet. D) At 15,000 feet. 

______ 4. The critical altitude for oxygen requirement is approximately? 

A) 4,000 feet.  C) 38,000 feet. B) 25,000 feet. D) 40,000 feet

 ______5. Oxygen equipment must be carried by aircraft capable of flying above. 

A) 4,000 feet.  C) 10,000 feet. B) 8,000 feet. D) 15,000 feet. 

______ 6. A chemical oxygen generator has a supply duration of at least? 

  1. 15 minutes  C) 5 minutes 
  2. 30 minutes D) 25 minutes

______ 7. If an aircraft suddenly drops pressure at 14, 000 feet: 

  1. Attendant must drop masks. — 
  2. Masks drop manually. 
  3. Passenger must get mask from overhead stowage.  
  4. Masks drop automatically. 

When the PSU doors open the masks drop to the half-hung position.

The doors of the unit are automatically by a barometrically controlled release mechanism if the cabin altitude reaches 14 000 feet or by manual selection by the flight cew at any altitude.

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______ 8. What is the principle of an oxygen generator? 

  1. Sodium chlorate and iron mixed by an electronic detonator. 
  2. Sodium chlorate and iron using a mechanical detonator producing oxygen when mixed with air. 
  3. Sodium chloride and iron mixed by an electronic detonator.  
  4. All of the answers are correct. 

______ 9. Portable oxygen bottles are fitted with? 

  1. A demand regulator.  C) An over temperature indicator.  
  2. An overpressure indicator.  D) A non-return valve.

______ 10. How many fire extinguishers are required on an aircraft with 501 passengers? 

  1. 5 C) 7 
  2. 6 D) 8

______ 11. Attendant call is achieved by pressing a button on the passenger service unit (PSU). To reset the light: 

  1. The button is pushed again. 
  2. The button is pulled out. 
  3. A reset switch on the attendant’s panel is operated. 
  4. No button needs to be pushed. 

______ 12. After a successful ditching, the life rafts deployment will? 

  1. Be briefed by the cabin crew 
  2. Have detailed instructions in a booklet in a seat pocket. 
  3. Be rapid and obvious with easily and readily displayed instructions adjacent to the life/rafts. 

______ 13. Life jackets are inflated with cylinders of? 

  1. Air C) Nitrogen 
  2. Oxygen D) Carbon dioxide 

______ 14. Aircraft emergency escape slides are usually pressurized with? 

  1. Air C) Nitrogen 
  2. Oxygen D) Carbon dioxide 

(All inflatable emergency equipment are inflated with CO2)

______ 15. How often are life jackets inspected? 

  1. In accordance with the manufacturers specification. 
  2. In accordance with the aircraft maintenance manual. 
  3. Every 12 months. 
  4. Every 7 days. 


  1. In regards to passenger oxygen system during aircraft depressurization, why is it important to put on your oxygen mask first before assisting to put the mask of others? 

It is because of the “time of consciousness”, they might fail to assist others when they are becoming dizzy every second. His/her plan to assist others might be more effective if he put the mask first so he can help more effectively and avoid hypoxia.

  1. Can the passenger doors and the overwing escape hatches be opened during flight or when the aircraft is at cruising altitude? Explain your answer.

The passenger doors and the overwing escape hatches cannot be opened during flight or when the aircraft is at cruising altitude because of the differential pressure between the inside cabin and the outer atmospheric pressure. Also, if the hatches and doors are opened during flight, the people inside will get suck outside and the aircraft will experience difficulties.

  1. Why do you think megaphones that will be used by the cabin staff for passenger information and emergency situations are not required for airplanes having passenger seats of 60 and below?

Aircraft having passenger seats below 60 are smaller compared to other aircraft that need at least one megaphone during flight. The crew’s voice will easily reach the people inside the cabin and the emergency exits in a smaller aircraft can be accessed easier than exits in bigger aircraft.

  1. Will the airplane still authorized to fly if the fire-proof gloves and jimmy/crowbar are missing on board the plane? Explain your answer. 

No, an airplane must have at least one crash axe or crowbar on the flight deck if this aircraft has a maximum take-off mass exceeding 5700 kg or having a maximum seating capacity of more than 9 seats.

  1. Will the airplane still authorized to fly if there is one (1) slide raft that is inoperative in one of the passenger cabin doors? Explain your answer. 

The airplane with one inoperative slide raft in one of the passenger cabin doors will not be authorized to fly because it will be a big hindrance to achieve the 90 seconds rule to evacuate all the people inside the aircraft.

Also, there is a rule that aircraft that takes off or lands over water, or operating more than 120 minutes flight time or 400 miles from land, need rafts and life jacket to be carried inside the aircraft at all times.

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