The biggest problem for them was a V-bar Flight Director; the rest of their fleet had Cross-bars.
Wow, is this true?
I had a f/o try to turn the aircraft upside down one dark night because of V-bars (only one in the fleet again). We were 4 or 5 seconds from being upside down at 2,000'. And I was heads down with a frequency change.
Left the company and warned the authorities, but nobody seems to care. Tombstone regulation.
P.S. Nothing wrong with V-bars, I think they are brilliant. But you cannot mix and match, just as you cannot have half the fleet with western ADIs and half with Russian.
T