Yeah, had a couple of instrument failures along the way.
The usual vac pump failures in singles etc. No biggy, VMC.
Also used to happen in the Islander too. Was only permitted to continue flight (multi sector) if VMC was assured. I had to pull the little plastic drive out of it and then secure.
Only happened with dry vac pumps, never seen a wet vac pump fail.
Slave mechanism failures. Good idea to check it on the runway.
AHARS failure in the Dash 8. Absolutely nothing like the sim detail.
(basicly all the control instruments. Atitude, heading reference system). No way was I going in IMC with that one.
ASI over readings. Had to keep cross checking the captain's. Pain.