# Accident 19910420011599A: Bell 47G3B1, Harwich, MA, April 20, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 20, 1991, 08:00 local time
- Place: Harwich, MA
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: Agricultural (Part 137)
- Operator: FIWG
- Location: 41.6862° N, 70.0759° W: Placed by OpenAirDocs: center of Harwich, MA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.6862&lon=-70.0759&mi=10
- Aircraft: N1166W (not matched to a registry record)
- Reported make and model: BELL 47G3B1
- Reported engine: LYC TVO435B1A
- Fatal injuries: 0
- Pilot flight hours: 4,240 total, 2,500 in this make and model
- NTSB investigation: [NTSB NYC91DNA02](https://openairdocs.org/ntsb/NYC91DNA02) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910420011599A

## Narrative

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

ROTOR RPMS DECAYED AND ENGINE OVERSPEED ON CLIMBOUT. LANDED HARD IN CRANBERRY BOG. CLUTCH DRUM SCORED AND WORN OUT.

## 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 NYC91DNA02](https://openairdocs.org/ntsb/NYC91DNA02), Apr 20, 1991: Bell 47-G3B1 (N1166W), Harwich, MA, substantial damage. Probable cause: A FAILURE OF THE CLUTCH DURING TAKEOFF DUE TO IMPROPER MAINTENANCE PROCEDURES. FACTORS RELATED TO THE ACCIDENT WERE INSUFFICIENT ALTITUDE TO ESTABLISH AN AUTOROTATION.

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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