# Accident 19891129047789A: Hughes 369D, Stayton, OR, November 29, 1989

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: November 29, 1989, 11:45 local time
- Place: Stayton, OR
- Damage: Substantial damage
- Operating rules: Rotorcraft external load (Part 133)
- Location: 44.8092° N, 122.7194° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=44.8092&lon=-122.7194&mi=10
- Aircraft: N446TN, a cancelled registration (https://openairdocs.org/deregistered/N446TN-1990-07-09) (OpenAirDocs)
- Registry model: Hughes Helicopters HUGHES 369D (registry code 4470706, https://openairdocs.org/model/hughes-helicopters-hughes-369d) (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Reported engine: ALLSN 250C20B
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 10,780 total, 1,720 in this make and model, 130 in the last 90 days
- NTSB investigation: [NTSB SEA90LA023](https://openairdocs.org/ntsb/SEA90LA023) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19891129047789A

## Narrative

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

LOUD BANG LOST ROTOR RPM, SETTLED, CHOPPED TAIL BOOM. SPRAY CLUTCH FAILED.

## 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 SEA90LA023](https://openairdocs.org/ntsb/SEA90LA023), Nov 29, 1989: Hughes 369D (N446TN), Stayton, OR, substantial damage. Probable cause: THE MAINTENANCE PERSONNEL FAILED TO RECORD THE PREVIOUS FLIGHT TIME FOR THE OVERRUNNING CLUTCH ON AIRWORTHINESS CERTIFICATION DOCUMENTS WHEN THE ASSEMBLY WAS OVERHAULED. ALSO, CAUSAL TO THE ACCIDENT…

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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