PPRuNe Forums - View Single Post - 747 classic FFRATS
View Single Post
Old 19th July 2006 | 09:21
  #7 (permalink)  
747dieseldude
 
Joined: Mar 2006
Posts: 113
Likes: 0
From: TLV
Originally Posted by zerozero
How'd I do?
You did just fine.

Max contimous is equal to max climb. I think in the AFM, max climb is with 3 packs, and max cont is with only 2 packs, but since the FFRATS adjusts itself to the actual number of packs, you get the same numbers.

Regarding cruise power, boeing has limited the max cruise thrust to a lower value. Having some extra power above max cruise allows the a/c to accelerate back to cruise speed even when close to the cruise thrust limits, in case the speed should drop.

While on the subject, our SOP is to leave the N1 Limit on CLB even when reaching cruise, to have that additional power in case needed. Is your company SOP to place it in CRZ when stabilized at cruise setting?
747dieseldude is offline