Reduced Thrust Takeoff
Thread Starter
Joined: Jul 2007
Posts: 19
Likes: 0
From: Mediteranian Region
Reduced Thrust Takeoff
Please can someone enlighten us, why if you are dispatched with a thrust reverser inop, on a B737 CL, why can't you use reduced Takeoff Thrust? Since [Thrust Reverser] it is not taken into consideration in the RTO calculations by the manufacturer. And you are not taking off from a contaminated runway?
Thanks
Long D
Thanks
Long D
Joined: Jul 2007
Posts: 829
Likes: 9
From: taking up the hold
It's just plain old risk assessment by Boeing.
They don't take reverse into account for normal take-offs but it is still available should you reject.
If the eng with the serviceable reverser fails you no longer have that option so they use rated thrust. ie accelerate distance to V1 is shorter therefore stopping distance is longer.
Of course you only have this luxury when you would have done a red thr take-off. A field length limited full power take-off wouldn't have any additional margin beyond those mandated by the perf requirements.
They don't take reverse into account for normal take-offs but it is still available should you reject.
If the eng with the serviceable reverser fails you no longer have that option so they use rated thrust. ie accelerate distance to V1 is shorter therefore stopping distance is longer.
Of course you only have this luxury when you would have done a red thr take-off. A field length limited full power take-off wouldn't have any additional margin beyond those mandated by the perf requirements.
Thread Starter
Joined: Jul 2007
Posts: 19
Likes: 0
From: Mediteranian Region
It is a policy and has nothing to do with engine, since we operate aircrafts with all engine versions. Also to the rest, Takeoff calculations do not cater for reverse thrust operation during a rejected T/O, it has nothing to do with how long you run on a runway. Thanks
