# Accident 19740521027169A: Bell 47D1, Circleville, OH, May 21, 1974

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 21, 1974
- Place: Circleville, OH
- Damage: Substantial damage
- Phase of flight: To Vertical (Helicopter Only)
- Location: 39.6012° N, 82.9325° W: Placed by OpenAirDocs: center of Circleville, OH, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.6012&lon=-82.9325&mi=10
- Aircraft: N157B, registered now (https://openairdocs.org/aircraft/N157B) (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
- Fatal injuries: 0
- Pilot flight hours: 1,140 total, 923 in this make and model, 2 in the last 90 days
- NTSB investigation: [NTSB CHI74FEK26](https://openairdocs.org/ntsb/CHI74FEK26) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19740521027169A

## Narrative

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

UNWANTED NEEDLE SPLIT.INCR IN PWR CAUSED ENG OVRSPEED.UN CK THROTTLE RIGGING.TAIL LOW LDG.

## 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 CHI74FEK26](https://openairdocs.org/ntsb/CHI74FEK26), May 21, 1974: Bell 47D1 (N157B), Circleville, OH, substantial damage

## Other reports on N157B (1)

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

- [Incident 19920831038909I](https://openairdocs.org/incident/19920831038909I), Aug 31, 1992: Bell 47D1 (N157B), Natchitoches, LA, Minor damage. Tail rotor drive shaft severed just aft of second aft hanger bearing. Autorotated to ground.

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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