# NTSB SEA73FYE07: Bensen B8M, N3685, Olympia, WA, July 20, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: July 20, 1972
- Place: Olympia, WA · OLYMPIA, WA
- Location: 47.0406° N, 122.8950° W: Placed by OpenAirDocs: center of Olympia, WA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.0406&lon=-122.8950&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report January 9, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 167735
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA73FYE07
- Page: https://openairdocs.org/ntsb/SEA73FYE07

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1053  72/7/20    OLYMPIA,WASH        BENSEN B8M          CR-  0  0  1  INSTRUCTIONAL             PRIVATE, AGE 62, 408
        TIME - 1700                    N3685               PX-  0  0  0  TRAINING                  TOTAL HOURS, 276 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - OLYMPIA
        DEPARTURE POINT             INTENDED DESTINATION
          OLYMPIA,WASH                LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           COLLISION WITH GROUND/WATER: UNCONTROLLED                IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER OPERATION OF FLIGHT CONTROLS
        REMARKS- LOST CTL PRACTISING LOW ALT MANEUVERS. PLTS GYRO COPTER QUALICATION UNDETERMINED.
```

## Aircraft

- Registration: [N3685](https://openairdocs.org/deregistered/N3685-2017-11-18), registration cancelled 2017-11-18, S/N 517, built 1971 (OpenAirDocs)
- Reported make and model: BENSEN B8M
- Registry model: [Browing BENSEN B-8M](https://openairdocs.org/model/browing-bensen-b-8m) (registry code 1300514) (OpenAirDocs)
- Registry engine: [Mcculloch 4318A&E/0-100](https://openairdocs.org/engine/mcculloch-4318a-e-0-100) (registry code 43101, reciprocating) (OpenAirDocs)
- Category: Gyroplane, amateur-built
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Olympia

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.

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