PPRuNe Forums - View Single Post - Ethiopian airliner down in Africa
View Single Post
Old 7th Apr 2019, 11:23
  #3539 (permalink)  
Derfred
 
Join Date: Jun 2006
Location: Brisbane
Posts: 265
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Just This Once...
It is also of note that the FCC commanded the stab aircraft nose down 3 times with the flaps still set.
No, it isn't of note.

That's autopilot trim.

It is the autopilot keeping the aircraft in trim while it accelerates to the selected bug speed of 238 knots while engaged in LVL CHG mode. What would you have it do... fly out of trim?

(It isn't speed trim - if the pilot was flying manually, then speed trim would have activated, but it would have been nose up instead of nose down.)

If and when Boeing produces an acceptable software-only fix for the current issues the only thing that will change will be the software version running in the FCCs.
And your point is?

The current problem appears to be a poorly designed piece of software known as "MCAS".

The proposed solution is a better designed piece of software to replace it.

If it works, what are you getting agitated about?
Derfred is offline