Reduced Take Off Thrust

Question 1

Drake vs Assumed temperature exceedance

Answer 1

D rate no

Assumed yes

Question 2

Drake can increase take off weight under what conditions

Answer 2

Short runway

Contaminated runway- wet, ice, slush or snow

Question 3

Assumed temp

Answer 3

If take off performance requirements can be met at a lower thrust based on a higher than actual temp, then the higher assumed temp can be used

Question 4

Assumed temp

Answer 4

Is the maximum temp which will allow the takeoff performance at the expected weight, to meet all the takeoff performance requirements such as takeoff distance, climb gradient and obstacle clearance

Question 5

Climb performance using assumed temp

Answer 5

Unaffected

Question 6

Max assumed temp thrust percentage reduction and other restrictions

Answer 6

25%
Vmcg is calculated at the selected thrust setting and actual OAT
Not permitted when Rwy contaminated
Permitted in wet rwy if airline accounts for the reduced braking performance

Question 7

Drake not allowed

Answer 7

When scheduled take off weight is higher than max derate tow

Question 8

Assumed allowed

Answer 8

Scheduled tow less than TO full rate, ie excess performance