PDA

View Full Version : flying below VLS


westinghouse
27th Aug 2007, 11:08
hi,

sorry to disturb youll again. dont know if this has been asked.

with no flap/ slat landing and the dual engine failure (340) we selct the speed below Vls and land.
is there any reason for this?
and why cant we approach at VLS like in the over weight landing checklist?

cheers

Ghostflyer
27th Aug 2007, 15:34
So you don't go whistling off the end of the runway. Energy is proportional to V Squared and so every knot you can lose airborne, is energy that doesn't have to be dissipated by the brakes.

You have committed to land and so do not need to fly at Vmcl-2 which would maintain your rudder authority in case you have to power up. If you do try to do a MAP, having already commited and slowed to Vapp, you can forget about seeing the chief pilot for tea and biccies; you'll be eating asphalt!

westinghouse
28th Aug 2007, 10:15
spot on. just what i needed. thanx.:ok: