Originally Posted by
BOAC
Way back in post #3262, Lonewolf wrote "caveat, it may be a load of rubbish if the gyros in the A330 are not prone to tumbling ..."
This has been rumbling around since day 1 and I'm not sure I've noticed an answer. I was under the impression that the notified failures were all ADC related?
Do we have any indication that the IRS attitude was faulty?
Not that I'm aware of.
I think the tumbling referred to tumbling due to excessive maneuvering of the aircraft.
However, I have serious doubts that the IR part of the ADIRUS are prone to tumbling like a classic gyro although I don't know for sure.
And the standby AI in this case was a Laser Ring Gyro if I remember correctly which should also not be prone to tumbling.
That said, I could well imagine that recovering a tumbling airliner in turbulence and complete darkness only by the instruments after having been taken by surprise and with a plethora of ECAM message popping up might not be quite as easy as in an aerobatic aircraft in good visibility during a planned and well trained maneuver....