Flaps 1 versus flaps 5 Taokeoff 737

[Olendirk]

Guys,

whats the main difference after the lift up. do I have a better climb performance with flaps 1 or flaps 5? And whats the purpose of improved climb?
Why do many airlines use Improved climb as std? What are the pros and cons?


Sincerley


OD

[Rainboe]

F5 gets you airborne quicker, but with a worse climb angle. If you look at the Take-Off Performance tables for runways, very often the runway is Obstacle Clearance limited, and it is this that limits take-off weight. So the F5 take-off is more limited. With F1, the take-off run is slightly longer, but once airborne, the climb is steeper, so the take-off weight is usually much higher. It can make quite a difference. The improved climb table gives you higher weight, and I think more reduced power take-off saving engine wear.

[BOAC]

http://www.pprune.org/forums/archive/index.php/t-10281.html