# Accident 19850924075939A: Hughes 369D, Porterville, CA, September 24, 1985

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 24, 1985, 18:00 local time
- Place: Porterville, CA
- Damage: Destroyed
- Phase of flight: Pwr Off Run Land (Autorotation
- Operating rules: General operating rules (Part 91)
- Location: 35.9602° N, 118.9207° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=35.9602&lon=-118.9207&mi=10
- Aircraft: N29707, a cancelled registration (https://openairdocs.org/deregistered/N29707-2013-06-06) (OpenAirDocs)
- Registry model: Hughes Helicopters HUGHES 369D (registry code 4470706, https://openairdocs.org/model/hughes-helicopters-hughes-369d) (OpenAirDocs)
- Registry engine: Allison 250-C20 series (registry code 03020, https://openairdocs.org/engine/allison-250-c20-series) (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Reported engine: ALLSN 250C20B
- Fatal injuries: 0
- Pilot flight hours: 4,000 total, 0 in this make and model, 0 in the last 90 days
- NTSB investigation: [NTSB LAX85LA403](https://openairdocs.org/ntsb/LAX85LA403) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19850924075939A

## Narrative

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

RAPID VIBRATION WHILE EXCEEDING RECOMMENDED VELOCITY. DESCENT, LOST DIRECTIONAL CONTROL. FRACTURE IN PITCH HOUSING.

## 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 LAX85LA403](https://openairdocs.org/ntsb/LAX85LA403), Sep 25, 1985: Hughes 369D (N29707), Porterville, CA, destroyed

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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