# Accident 19871103061769A: Robsin R22ALPHA, Moraga, CA, November 3, 1987

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 3, 1987, 13:38 local time
- Place: Moraga, CA
- Damage: Destroyed
- Phase of flight: Sfl Autorotation
- Operating rules: General operating rules (Part 91)
- Location: 37.8296° N, 122.0990° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=37.8296&lon=-122.0990&mi=10
- Aircraft: N8475A, a cancelled registration (https://openairdocs.org/deregistered/N8475A-2013-06-07) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 ALPHA (registry code 7640104, https://openairdocs.org/model/robinson-helicopter-r22-alpha) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: ROBSIN R22ALPHA
- Reported engine: LYC O320B2C
- People aboard: 2
- Fatal injuries: 2
- Pilot flight hours: 773 total, 456 in this make and model, 171 in the last 90 days
- NTSB investigation: [NTSB LAX88FA032](https://openairdocs.org/ntsb/LAX88FA032) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19871103061769A

## Narrative

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

MAIN ROTOR BLADE STRUCK THE COCKPIT AND SHATTERED INFLIGHT DURING POSSIBLE ENGINE OUT PRACTICE AND ROTOR RPM DECAY.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX88FA032](https://openairdocs.org/ntsb/LAX88FA032), Nov 3, 1987: Robinson R22A (N8475A), Moraga, CA, destroyed, 2 fatal. Probable cause: A DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION FOR AN UNDETERMINED REASON, WHICH RESULTED IN ROTOR CONTACT WITH THE COCKPIT AREA.

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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