# Accident 19840801036639A: Bell 47G5A, Winterhaven, CA, August 1, 1984

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 1, 1984, 05:30 local time
- Place: Winterhaven, CA
- Damage: Substantial damage
- Phase of flight: To Running(Helicopter/Vtol Ac)
- Operating rules: Agricultural (Part 137)
- Location: 32.8707° N, 114.7204° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=32.8707&lon=-114.7204&mi=10
- Aircraft: N4099G, a cancelled registration (https://openairdocs.org/deregistered/N4099G-2017-04-04) (OpenAirDocs)
- Registry model: Bell 47G-5A (registry code 1181034, https://openairdocs.org/model/bell-47g-5a) (OpenAirDocs)
- Registry engine: Lycoming VO-435 series (registry code 41525, https://openairdocs.org/engine/lycoming-vo-435-series) (OpenAirDocs)
- Reported make and model: BELL 47G5A
- Reported engine: LYC VO435B1A
- Fatal injuries: 0
- Pilot flight hours: 9,770 total, 2,650 in this make and model, 183 in the last 90 days
- NTSB investigation: [NTSB LAX84LA424](https://openairdocs.org/ntsb/LAX84LA424) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19840801036639A

## Narrative

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

PILOT ALLOWED ROTOR RPM TO DECREASE AFTER LIFT OFF, HELICOPTER SETTLED, LEFT SKID DUG IN CAUSING CRASH.

## 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 LAX84LA424](https://openairdocs.org/ntsb/LAX84LA424), Aug 1, 1984: Bell 47G-5A (N4099G), Winterhaven, CA, substantial damage

## Other reports on N4099G (3)

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

- [Accident 19880918039149A](https://openairdocs.org/incident/19880918039149A), Sep 18, 1988: Bell 47G5A (N4099G), Perris, CA, Substantial damage. Lost tail rotor control on liftoff. Rotor hit ground along side of loader. Engine basket fatigue fractured.
- [Incident 19810524056129I](https://openairdocs.org/incident/19810524056129I), May 24, 1981: Bell 47G5A (N4099G), Somerton, AZ, Substantial damage. Mechanic was making engine runup. Aircraft became airborne and crashed. The mechanic was not rated in helicopter.
- [Accident 19750908029459A](https://openairdocs.org/incident/19750908029459A), Sep 8, 1975: Bell 47G5 (N4099G), Chandler, AZ, Substantial damage. Rapid intense vib,lndd in damp soft plowed fld. Skid toes dug in,m/r blade hit t/r drive & boom.

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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