Takeoff and Climb Performance

Question 1

When selecting the EOL, what distances do you need to consider?

Answer 1

You need to take the lesser of the ASDA, STODA or TODA (provided they are 1.9% or less) and then subtract the line-up allowance of 45m.

Question 2

In Australia, a 3-engine turbojet aircraft must be capable of a GROSS takeoff gradient of…

Answer 2

2.7%

Question 3

In Australia, a 3-engine turbojet aircraft must be capable of a NET takeoff gradient of…

Answer 3

1. 8% (2.7% GROSS minus NET of 0.9%)

* Note that 1.9% is what the 727 is capable of so take anything of 1.9% or less

Question 4

Why do you have to complete a takeoff graph AND climb graph for each of the flap settings

Answer 4

Flap improves takeoff performance but degrades climb performance, so you need to find the BRW which is the best compromise

Question 5

How do you choose between a takeoff limited and climb limited BRW?

Answer 5

You choose the lesser of the two, and then out of the different takeoff and climb BRW limits, you choose the ‘biggest littlest’

Question 6

When Engine Anti-Ice is on, what correction applies to the Takeoff EPR

Answer 6

subtract by 0.01

Question 7

When Engine Anti-Ice is on, what do you do to the takeoff weight on the climb graph?

Answer 7

Reduce by 1200kg