Post-Mortem for Google Compute Engine’s Global Outage on April 11

Re:Post-Mortem for Google Compute Engine’s Global Outage on ... by ceejayoz on Wednesday April 13, 2016 @02:38PM (#11490975)

All pilots are trained to recover from a stall.

A failed autopilot could look like all sorts of things, from just automatically disconnecting itself (usually with a loud warning alert) to issuing incorrect instructions (which is why the pilots are supposed to be awake and alert while it's engaged, watching the instruments).

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Re:Post-Mortem for Google Compute Engine’s Global Outage on ... by neurotech1 on Thursday April 14, 2016 @12:11AM (#11494251)

Actually a key finding in AF447 was that pilots were not trained on how to recognize and recover from a high altitude stall. It is not like flying a Cessna 150. The junior first officer didn't realize the aircraft had stalled.

Pilots were trained on the procedure for recovering from a low altitude stall; 100% or TOGA thrust and power out of it while minimizing altitude loss. Training has now changed for both low altitude and high altitude stall recovery.

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Re:Post-Mortem for Google Compute Engine’s Global Outage on ... by ceejayoz on Thursday April 14, 2016 @10:22AM (#11496941)

IIRC, part of the issue was that the two pilots issued contradictory joystick commands, which the plane averaged to zero. Which is a bit terrifying.

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