PPRuNe Forums - View Single Post - AF 447 Thread No. 6
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Old 1st October 2011 | 01:29
  #1030 (permalink)  
CONF iture
 
Joined: Jan 2005
Posts: 1,916
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From: W of 30W
Case in Point. "We think Auto Trim UP into a Stall is a solution." On what Planet? Rather than allow that, why was it not aggressively disallowed? Yet in overspeed, the THS is locked in place, when at least arguably, it has a function in correcting PITCH to corral speed.
That’s even worse Lyman, under Normal Law, the system logically thinks it’s time to cancel autotrim by reaching Alpha Prot or slightly above, but when the situation has degraded and Alternate Law is active, the system thinks it’s smart to autotrim all the way whatever the Alpha …

Airbus : If you think you have some doubt about the data you receive, just keep things simple, degrade all the way straight to Direct Law. Make things easier for your crew. Airplanes fly well in Direct Law too ... including yours.
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