Results
Q1. Oil is used in an oleo strut to:
Correct answer is – limit the speed of extension and compression of the strut
Q2. The nose wheel assembly must be centred before retraction because:
Correct answer is – there is limited space in the nose wheel bay
Q3. The movement of the gear on lowering is normally damped to:
Correct answer is – counteract the force of gravity which would bring the gear down too fast
Q4. Inadvertent retraction of the landing gear on the ground is:
Correct answer is – prevented by the ground/air logic system
Q5. Creep (slippage):
Correct answer is – alignment can rip out the inflation valve on tubed tyres, and deflate the tyre
Q6. Tyre wear when taxiing can be reduced by:
Correct answer is – taxiing at less than 40 kph
Q7. To prevent scrubbing the tyres while taxiing, you should:
Correct answer is – turn no sharper than the minimum specified radius
Q8. The best extinguishant to use on a wheel or brake fire is:
Correct answer is – dry powder
Q9. When inflating a tyre fitted to an aircraft, the tyre pressure reading on the gauge should be modified by:
Correct answer is – 4%
Q10. The most likely cause of brake fade is:
Correct answer is – the brake pads overheating
Q11. The pressure needed to operate the wheel brakes on a large aircraft comes from:
Correct answer is – the aircraft main hydraulic system
Q12. Which of the following statements will produce the shortest landing run?i. Crossing the threshold at the correct height and speedii. Applying full anti-skid braking as quickly as possible after touchdowniii. Using maximum pedal pressure but releasing the pressure as the wheels start to skidiv. The use of cadence brakingv. Use of minimum braking pressure early in the landing run and maximum pressure towards the endvi. Application of reverse thrust as early as possible in the landing runvii. Deployment of the lift dumpers/speed brakes as early as possible in the landing run
Correct answer is – (i), (ii), (vi), (vii)
Q13. The formula which gives the minimum speed $(V_{p})$ at which aquaplaning may occur is:
Correct answer is – $dot{V_{p}}=9timessqrt{P}$ where P is psi and $dot{V_{p}}$ is in knots
Q14. An aircraft has a tyre pressure of 225 psi, its minimum aquaplaning speed will be:
Correct answer is – 135 knots
Q15. Landing gear ground locking pins are:
Correct answer is – removed prior to flight and stowed on the aircraft where they are visible to the crew
Q16. The most likely cause of brake unit dragging is:
Correct answer is – incorrect operation of the adjuster assemblies
Q17. A likely cause of nose wheel shimmy is:
Correct answer is – a torque link is worn or damaged
Q18. Creep (slippage):
Correct answer is – can be measured by painting marks on the tyre and wheel rim
Q19. The anti-skid system would be used:
Correct answer is – for both take off and landing runs
Q20. A hydraulic gear extension/retraction mechanism consists of sequence valves, uplocks and:
Correct answer is – downlocks
Q21. A nose wheel steering control system:
Correct answer is – allows the nose wheel to castor within preset limits about the neutral position
Q22. At an aircraft taxiing speed of 10 mph the anti-skid braking system is:
Correct answer is – inoperative
Q23. The tyre pressures are checked after a long taxi to the ramp following landing. The pressures will have:
Correct answer is – risen by 10% of their original weight-on-wheels value
Q24. The ply rating of a tyre:
Correct answer is – is the index of the tyre strength
