PPRuNe Forums - View Single Post - AF 447 Thread No. 8
View Single Post
Old 6th Jun 2012, 14:03
  #1136 (permalink)  
A33Zab
 
Join Date: Jun 2009
Location: somewhere
Posts: 451
Likes: 0
Received 0 Likes on 0 Posts
Initial FD pitch bar position.

What I don't get is why the system decides to dump the AP but thinks it smart to still display the FD for 3 more seconds.
between 02:10:05 and 02:10:07 FD2! (RH PFD) was not engaged.

one second remain, before both FDs were not displayed @02:10:08.
for that second the Nz delta was ~ -.15g....(Nzdemand 1g - Nzactual 1.15g).
IMO FD bar position would have been ND and minor.



AMM: 22-11-00

(1) Generation of FD bar commands

(a) Pitch FD bar command

The pitch FD bar command is computed by using the measured vertical acceleration (NZ) and the NZFD command (pitch outer loop).
A33Zab is offline