# Accident 19910505014259A: Hughes 369HS, Keanae, HI, May 5, 1991

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: May 5, 1991, 11:29 local time
- Place: Keanae, HI
- Damage: Substantial damage
- Phase of flight: Pwr Off Vert Land/Autorotate
- Operating rules: Air taxi and commuter (Part 135)
- Operator: DNWA
- Location: 20.8707° N, 156.4502° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=20.8707&lon=-156.4502&mi=10
- Aircraft: N9219F, a cancelled registration (https://openairdocs.org/deregistered/N9219F-2013-05-22) (OpenAirDocs)
- Registry model: Hughes 369HS (registry code 4470728, https://openairdocs.org/model/hughes-369hs) (OpenAirDocs)
- Registry engine: Allison 250 SER 400HP (registry code 03013, https://openairdocs.org/engine/allison-250-ser-400hp) (OpenAirDocs)
- Reported make and model: HUGHES 369HS
- Reported engine: ALLSN 250C20
- People aboard: 2
- Fatal injuries: 0
- Pilot flight hours: 4,200 total, 380 in this make and model, 82 in the last 90 days
- NTSB investigation: [NTSB LAX91LA198](https://openairdocs.org/ntsb/LAX91LA198) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19910505014259A

## Narrative

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

LOST ENGINE POWER. AUTOROTATED INTO TREES. SPUR ADAPTER GEARSHAFT SPLINES FAILED. IMPROPER COMPRESSOR BOLT LOOSE.

## 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 LAX91LA198](https://openairdocs.org/ntsb/LAX91LA198), May 5, 1991: Hughes 369HS (N9219F), Keanae, HI, substantial damage. Probable cause: THE TOTAL FAILURE IN FATIGUE OF THE HELICOPTER'S SPUR ADAPTER GEARSHAFT. A CONTRIBUTING FACTOR WAS RELATED TO THE LACK OF A SUITABLE EMERGENCY LANDING SITE.

## Other reports on N9219F (2)

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

- [Accident 19900503013369A](https://openairdocs.org/incident/19900503013369A), May 3, 1990: Hughes 369C (N9219F), Kahului, HI, Substantial damage. Tail boom was severed after striking a light marker pole while hovering to land on a trailer.
- [Accident 19800221004699A](https://openairdocs.org/incident/19800221004699A), Feb 21, 1980: Hughes 369HS (N9219F), Siletz, OR, Substantial damage. Helicopter lost power picking up logs. Blades hit trees. Substantial damage with no injury.

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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