# Incident 19910330015629I: Bell 47D1, Butler, MD, March 30, 1991

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: March 30, 1991, 16:15 local time
- Place: Butler, MD
- Damage: Minor damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: General operating rules (Part 91)
- Location: 39.5354° N, 76.7280° W: Placed by OpenAirDocs: center of Butler, MD, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.5354&lon=-76.7280&mi=10
- Aircraft: N4229A, a cancelled registration (https://openairdocs.org/deregistered/N4229A-2026-02-02) (OpenAirDocs)
- Registry model: Bell 47D1 (registry code 1180802, https://openairdocs.org/model/bell-47d1) (OpenAirDocs)
- Registry engine: Franklin 6V4 series (registry code 27033, https://openairdocs.org/engine/franklin-6v4-series) (OpenAirDocs)
- Reported make and model: BELL 47D1
- Reported engine: FRNKLN 6V4200*
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 3,300 total, 150 in this make and model, 90 in the last 90 days
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910330015629I

## Narrative

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

ENGINE QUIT IN FLIGHT. ENTERED AUTORATATION AND LANDED IN FIELD. FOUND TWO STUDS ON NR1 CYLINDER WERE BROKEN.

## Other reports on N4229A (2)

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

- [Incident 20050413006029I](https://openairdocs.org/incident/20050413006029I), Apr 13, 2005: Bell 47D1 (N4229A), New Cumberland, PA. (-23) On April 13, 2005, the pilot [privacy data omitted] operated Bell helicopter N4229A from capital city airport until the engine failed due to fuel…
- [Accident 19900513015869A](https://openairdocs.org/incident/19900513015869A), May 13, 1990: Bell 47D1 (N4229A), Baltimore, MD, Substantial damage. Rocked forward on skids at touchdown from practice autorotation. Main rotors flexed down and chopped tailboom.

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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