# Incident 20050524011009I: Beech 76, Stockton, CA, May 24, 2005

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: May 24, 2005, 13:45 local time
- Place: Stockton, CA
- Phase of flight: Practice Training Manuevers
- Operating rules: General operating rules (Part 91)
- Operator: SRJS
- Location: 37.9577° N, 121.2908° W: Placed by OpenAirDocs: center of Stockton, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.9577&lon=-121.2908&mi=10
- Aircraft: N6701T, registered now (https://openairdocs.org/aircraft/N6701T) (OpenAirDocs)
- Registry model: Beech 76 (registry code 1153005, https://openairdocs.org/model/beech-76) (OpenAirDocs)
- Registry engine: Lycoming O&VO-360 series (registry code 41514, https://openairdocs.org/engine/lycoming-o-vo-360-series) (OpenAirDocs)
- Reported make and model: BEECH 76
- Reported engine: LYC O360*
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 685 total, 115 in this make and model, 175 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20050524011009I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) DURING PART 141 TRAINING MANEUVER FLIGHT INSTRUCTOR HAD STUDENT SHUT DOWN LEFT HAND ENGINE AND FEATHER LEFT HAND PROPELLER. DURING ENGINE RESTART ATTEMPT THE LEFT HAND AIRCRAFT PROPELLER FAILED TO UNFEATHER, PREVENTING AN AIR START OF ENGINE. AN IN-FLIGHT ENGINE START WAS ATTEMPTED USING THE ELECTRIC STARTER WHICH ALSO FAILED TO RESTART ENGINE. AFTER NUMEROUS ENGINE RESTART ATTEMPTS FLIGHT INSTRUCTOR OPTED TO LAND AIRCRAFT AT STOCKTON AIRPORT WITH LEFT HAND ENGINE OFF AND FEATHERED. MAINTENANCE PERSONNEL LATER PERFORMED AN INSPECTION OF THE PROPELLER FEATHERING SYSTEM AND OBSERVED THAT THE PROPELLER ACCUMULATOR HEAD FAILED TO HOLD A REQUIRED 75 PSI AIR PRESSURE. THE MEASURED ACCUMULATOR HEAD PRESSURE WAS OBSERVED AT 20 PSI. THIS OBSERVED LOW PRESSURE WAS ATTRIBUTED TO A LEAKING ACCUMULATOR SERVICE PORT VALVE CORE.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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