# Accident 19911117052029A: Robsin R22MARINER, Ocala, FL, November 17, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 17, 1991, 16:00 local time
- Place: Ocala, FL
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: General operating rules (Part 91)
- Location: 29.1872° N, 82.1401° W: Placed by OpenAirDocs: center of Ocala, FL, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.1872&lon=-82.1401&mi=10
- Aircraft: N4072U, a cancelled registration (https://openairdocs.org/deregistered/N4072U-2013-09-24) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 MARINER (registry code 7640115, https://openairdocs.org/model/robinson-helicopter-r22-mariner) (OpenAirDocs)
- Registry engine: Lycoming 0-320 series (registry code 41508, https://openairdocs.org/engine/lycoming-0-320-series) (OpenAirDocs)
- Reported make and model: ROBSIN R22MARINER
- Reported engine: LYC O320B2C
- Fatal injuries: 0
- Pilot flight hours: 276 total, 127 in this make and model, 40 in the last 90 days
- NTSB investigation: [NTSB MIA92LA031](https://openairdocs.org/ntsb/MIA92LA031) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19911117052029A

## Narrative

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

ENGINE DID NOT RESPOND ON RECOVERY FROM PRACTICE AUTOROTATION. RPM DECAYED HARD LANDING CHOPPED OFF TAILBOOM.

## 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 MIA92LA031](https://openairdocs.org/ntsb/MIA92LA031), Nov 17, 1991: Robinson R22 Mariner (N4072U), Ocala, FL, substantial damage. Probable cause: THE PILOT-IN-COMMAND'S IMPROPER USE OF COLLECTIVE CONTROL AND THROTTLE DURING RECOVERY FROM AN AUTOROTATION WHICH RESULTED IN LOSS OF ROTOR RPM AND A SUBSEQUENT HARD LANDING.

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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