Originally Posted by
vilas
Hi Golden
But isn't the basics of instrument flying is to only trust your instruments and not your feelings......
Hi vilas, I agree - but sometimes when trying to explain why a crew did something very unusual and there wasn't any technical problem with the aircraft - then accident reports often mention the possibility of somatogravic illusion. It doesn't matter how often you you may have practiced in the simulator (all at 1g and within the pitch limit geometry of the motion) apparently the illusion is powerful and can take some crews by surprise.
How many times have you seen crews in the simulator performing something mildly stressful and they are both shouting over the "C chord" altitude alerter - neither of them even notice it is on until the work load is reduced? I suspect the somatogravic illusion stresses the crew member to such an extent that they don't read the PFD correctly or may even disbelieve it.