# Accident 19860923046129A: Amtrbx BENSENB8M, Deer Park, WA, September 23, 1986

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: September 23, 1986, 13:00 local time
- Place: Deer Park, WA
- Airport: Deer Park
- Damage: Destroyed
- Phase of flight: In Traffic Pattern-Circling
- Operating rules: General operating rules (Part 91)
- Location: 47.9898° N, 117.4999° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=47.9898&lon=-117.4999&mi=10
- Aircraft: N4621N (not matched to a registry record)
- Reported make and model: AMTRBX BENSENB8M
- Reported engine: AMTR 4318AMCCULCH
- Fatal injuries: 0
- Pilot flight hours: 69 total, 46 in this make and model, 6 in the last 90 days
- NTSB investigation: [NTSB SEA86FYE01](https://openairdocs.org/ntsb/SEA86FYE01) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19860923046129A

## Narrative

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

THE GYROCOPTER BEGAN OSCILLATING AND MAIN ROTORS CUT OFF THE TAIL. AIRCRAFT FELL VERTICALLY TO GROUND IMPACT.

## 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 SEA86FYE01](https://openairdocs.org/ntsb/SEA86FYE01), Sep 23, 1986: Jerome Dodge B-8-M (N4621N), Deer Park, WA, destroyed, 1 fatal

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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