Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor
Flight Crew Last 90 Days 45; Flight Crew Total 22000; Flight Crew Type 15
Aircraft Equipment Problem Less Severe; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance
Aircraft; Human Factors
While being vectored for a visual; I was cleared to 3000 and descended to 2500 while trying to figure out a gyro failure which shut down my HSI; RMI; Autopilot and Flight Director.....I was highly distracted!
PA23 Pilot reported he descended below his assigned altitude while troubleshooting a gyro failure.