# Accident 19910617022389A: Robsin R22BETA, Phoenix, AZ, June 17, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 17, 1991, 08:00 local time
- Place: Phoenix, AZ
- Damage: Destroyed
- Phase of flight: Autorot Descent (Rotorcraft)
- Operating rules: General operating rules (Part 91)
- Location: 33.6097° N, 111.8894° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=33.6097&lon=-111.8894&mi=10
- Aircraft: N4034K, a cancelled registration (https://openairdocs.org/deregistered/N4034K-1991-10-31) (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 O320B2B
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 222 total, 222 in this make and model, 166 in the last 90 days
- NTSB investigation: [NTSB LAX91LA264](https://openairdocs.org/ntsb/LAX91LA264) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910617022389A

## Narrative

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

LOST ROTOR RPM ON PRACTICE AUTOROTATIONS WITH POWER RECOVERY. IMPACTED AND ROLLED. DESTROYED BY FIRE.

## 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 LAX91LA264](https://openairdocs.org/ntsb/LAX91LA264), Jun 17, 1991: Robinson R-22B (N4034K), Phoenix, AZ, destroyed. Probable cause: THE FAILURE OF THE STUDENT TO MAINTAIN THE PROPER ROTOR RPM WHILE PERFORMING A PRACTICE AUTOROTATION, AND, THE FAILURE OF THE FLIGHT INSTRUCTOR TO PROPERLY SUPERVISE THE CONDUCT OF THE FLIGHT AND TO…

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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