Flight Performance and Planning Quiz 2

Question 1) An aircraft that has a lift:ratio of 12:1 will have a maximum gliding distance from 8,000ft in still air of:

16NM

15NM

14NM

13NM

Correct! Wrong!

12:1 ratio applies to the same units, so for 8,000ft height you get 8,000×12=96,000ft glide range. 1 NM = 6076.12 ft, so 96,000 : 6076.12 = 15.79 NM. Remember the height i.e. 1 in this case is in NM NOT ft. Therefore another way or expressing this ratio would be: 12nm for every 6000ft lost in altitude.

Question 2) What is the MTOM?

The maximum take off mass, the maximum allowable gross mass for take off

The minimum take off mass, the minimum allowable gross mass for take off

The maximum taxi out mass, the maximum allowable gross mass for leaving the apron, allowance is made for fuel burn before departure

The minimum taxi out mass, the minimum allowable gross mass for leaving the apron

Correct! Wrong!

MTOM stands for maximum take off mass, all masses for purposes of the mass and balance of an aircraft are given in maxima, as the weight is not to exceed the structural limit of the aircraft, in this case, on take off.

Question 3) If air density is reduced, full throttle take-off distance will be:

increased

decreased

the same because thrust is balanced by increased drag

the same because the aircraft will accelerate quicker due to reduced drag

Correct! Wrong!

A reduction in air density causes a reduction in aircraft performance, because the power developed on take-off depends on the fuel/air ratio going into the engine, thus the aircraft will take longer to accelerate and take off.

Question 4) The part of the runway available to an aircraft and capable of supporting its weight during the take-off is:

TODA

ASDA

clearway

TORA

Correct! Wrong!

TORA = take off run available, the length of runway declared available and suitable for the ground run of an aeroplane taking off.