# Accident 19930910033889A: Robsin R22BETA, Floriston, CA, September 10, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 10, 1993, 12:40 local time
- Place: Floriston, CA
- Damage: Substantial damage
- Phase of flight: Pinnacle Landing
- Operating rules: General operating rules (Part 91)
- Operator: HIAA
- Location: 39.3900° N, 120.0202° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=39.3900&lon=-120.0202&mi=10
- Aircraft: N47NH, a cancelled registration (https://openairdocs.org/deregistered/N47NH-2015-05-12) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 BETA (registry code 7640110, https://openairdocs.org/model/robinson-helicopter-r22-beta) (OpenAirDocs)
- Reported make and model: ROBSIN R22BETA
- Reported engine: LYC O320B2C
- Fatal injuries: 0
- Pilot flight hours: 1,225 total, 811 in this make and model, 163 in the last 90 days
- NTSB investigation: [NTSB LAX93LA348](https://openairdocs.org/ntsb/LAX93LA348) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19930910033889A

## Narrative

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

DURING PINNICLE LANDING DEMO. BEGAN GO AROUND. ROTOR RPM DECAYED. TURNED AWAY BUT DESCENDED INTO TREES ON MOUNTAIN.

## 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 LAX93LA348](https://openairdocs.org/ntsb/LAX93LA348), Sep 10, 1993: Robinson R22B (N47NH), Floriston, CA, substantial damage. Probable cause: the flight instructor's failure to maintain main rotor RPM after initiating a go-around from a pinnacle approach. A factor in the accident was the high density altitude condition.

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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