PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures
Old 10th Jul 2019, 09:52
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Peter H
 
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Originally Posted by phylosocopter
Yes the point I am trying to make is that there does not seem to be any code or standards around the state of display and alarms in case of AP loss of situational awareness. I believe that it should be mandatory in any case where the automatics have lost situational awareness to silence any situational alarms on handover back to the wetware! is there a section on AP disconnect state somewhere? if not why not!?
Also, when possible, it might be appropriate for HAL to [very infrequently] warn the pilots of the context of an impending disconnect.

As an example I always felt that there was a real possibility that AF447's HAL might have been able to give the pilots a little notice with a message such as:
- pitot tubes playing up, recall unreliable speed drill
- just lost a pitot tube, recall unreliable speed drill
Sort of HAL in F/E conversation mode.

PS I've no access to any details of pitot tube handling, but quite a lot of the wording of the AF447 threads kept suggesting to me something might have been possible.
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