# Accident 19940604014999A: Bell 47H1, Tulsa, OK, June 4, 1994

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 4, 1994, 09:00 local time
- Place: Tulsa, OK
- Damage: Substantial damage
- Phase of flight: Autorot Descent (Rotorcraft)
- Operating rules: General operating rules (Part 91)
- Location: 36.1797° N, 96.0497° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=36.1797&lon=-96.0497&mi=10
- Aircraft: N2831B, registered now (https://openairdocs.org/aircraft/N2831B) (OpenAirDocs)
- Registry model: Bell 47H-1 (registry code 1181011, https://openairdocs.org/model/bell-47h-1) (OpenAirDocs)
- Registry engine: Franklin 6V4 series (registry code 27033, https://openairdocs.org/engine/franklin-6v4-series) (OpenAirDocs)
- Reported make and model: BELL 47H1
- Reported engine: FRNKLN 6V350A
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 202 total, 106 in this make and model, 19 in the last 90 days
- NTSB investigation: [NTSB FTW94LA193](https://openairdocs.org/ntsb/FTW94LA193) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19940604014999A

## Narrative

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

DURING PRACTICE AUTOROTATIONS TO A FIELD ALLOWED ROTOR RPM DECAY. LANDED HARD. MAIN ROTORS FLEXED. CHOPPED 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 FTW94LA193](https://openairdocs.org/ntsb/FTW94LA193), Jun 4, 1994: Bell 47H-1 (N2831B), Tulsa, OK, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN ROTOR RPM, HIS DELAYED LANDING FLARE, AND THE IMPROPER TOUCHDOWN.

## Other reports on N2831B (2)

Matched to the same aircraft by N-number and date.

- [Incident 19990312016329I](https://openairdocs.org/incident/19990312016329I), Mar 12, 1999: Bell 47H1 (N2831B), Ontario, CA. (-5) The pilot of a Bell helicopter BHT-47 reported to the Ontario tower that he had a loss of engine power. The pilot made a precautionary landing in a dirt…
- [Incident 19821117064829I](https://openairdocs.org/incident/19821117064829I), Nov 17, 1982: Bell 47H1 (N2831B), Detroit, MI. Fumes in cockpit. Made precautionary landing. Crankcase breather vent tube had separated from engine.

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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