PPRuNe Forums - View Single Post - AF 447 Thread No. 9
View Single Post
Old 4th Aug 2012, 12:23
  #1015 (permalink)  
rudderrudderrat
 
Join Date: Oct 2009
Location: UK
Posts: 1,270
Likes: 0
Received 0 Likes on 0 Posts
Hi Clandestino,
Originally Posted by Dozy Wannabe
You're in Direct Law whenever you land.
Originally Posted by Clandestino
Actually, it is only in rollout.
If you are going to be picky, during roll out, you are actually in a sub mode of Direct Law called Ground Mode.


It's NOT the same as the in flight Direct Law: FCOM 1.27.30 P6.
"With the aircraft in the clean configuration, the maximum roll rate is about 30° per second.
With slats extended, it is about 25° per second."

Ground mode aileron deflection, when above 80 knots, the effectiveness of roll control, ailerons and roll spoilers, is reduced by the half (e.g. aileron deflection limited to 50% of maximum deflection).
See, Report: Lufthansa A320 at Hamburg on Mar 1st 2008, wing touches runway in cross wind landing

Easy for the unwary to get caught out.
Simples?
rudderrudderrat is offline