# Accident 19920430012239A: Bell 47G2A, Dousman, WI, April 30, 1992

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 30, 1992, 10:45 local time
- Place: Dousman, WI
- Damage: Substantial damage
- Phase of flight: Pwr Off Run Land (Autorotation
- Operating rules: General operating rules (Part 91)
- Location: 43.0107° N, 88.4696° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=43.0107&lon=-88.4696&mi=10
- Aircraft: N52HB, a cancelled registration (https://openairdocs.org/deregistered/N52HB-2018-03-06) (OpenAirDocs)
- Registry model: Bell 47G-2A (registry code 1181012, https://openairdocs.org/model/bell-47g-2a) (OpenAirDocs)
- Registry engine: Lycoming VO-435 series (registry code 41525, https://openairdocs.org/engine/lycoming-vo-435-series) (OpenAirDocs)
- Reported make and model: BELL 47G2A
- Reported engine: LYC VO435A1F
- Fatal injuries: 0
- Pilot flight hours: 17,000 total, 5,000 in this make and model
- NTSB investigation: [NTSB CHI92LA137](https://openairdocs.org/ntsb/CHI92LA137) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19920430012239A

## Narrative

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

SEVERE VIBRATION AUTOROTATED TO A TREE LINED CLEARING. STRUCK TREES. BOLT WAS MISSING FROM SWARSH PLATE DRIVE COVER

## 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 CHI92LA137](https://openairdocs.org/ntsb/CHI92LA137), Apr 30, 1992: Bell 47-G2A (N52HB), Dousman, WI, substantial damage. Probable cause: THE IN-FLIGHT LOSS OF THE SWASH PLATE DRIVE LINK BOLT WHICH ALLOWED THE SWASH PLATE DRIVE ASSEMBLY TO DISCONNECT.

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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