"Gary L. Drescher" writes:

In MS FS2002, the AI fails abruptly, in just a few seconds. But I've heard
that FS2004 (due late this month) has more-realistic gyro failures.

If you don't want to wait, FlightGear already has gradual gyro
failures. You can fail an individual gyro or an entire system
(i.e. vacuum or electrical):

http://www.flightgear.org/


All the best,


David

--
David Megginson, , http://www.megginson.com/