Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 30; Flight Crew Total 2400; Flight Crew Type 60
Distraction; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Flight Crew Overcame Equipment Problem; Flight Crew Took Evasive Action
Aircraft; Human Factors
Had a problem with my autopilot; received a warning from ATC and the tower and I ended up significantly below the glide slope on my first approach before I made appropriate corrections. I did a go around and completed the second approach manually without incident.I will be working with an avionics expert to determine the cause. In the future I need to be more diligent monitoring the autopilot activity and monitoring the glideslope and making faster manual corrections as needed.
The pilot of a Piper Aerostar reported an autopilot problem on approach that resulted in a descent below the glideslope before receiving an alert by ATC.