Originally Posted by
megan
Quote from Boeing site.Am I just a worry wart? Boeing put in a system (MCAS) to ensure certifiable handling characteristics approaching the stall, yet crews will not receive sim training on approaches to the stall with MCAS disabled. Gotta be a gotcha there?
The assumption must be that Boeing have done extensive flight tests (preliminary and more recently), to measure under maximum yaw (single engine operation, cross-winds, etc), that AOA disagree is within certain limits. IMO the 5.5 degrees threshold is not an arbitrary number, nor an FAA mandate, but based on actual aerodynamics.
If they have not done this work, the FAA could never certify the revised MCAS. Presumably the test details will emerge sometime soon. If not, doubt would remain about the validity of the flight envelope.