# NTSB SEA71FDG16: Mooney M20F, N9646M, Cameron, MT, October 30, 1970

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: October 30, 1970
- Place: Cameron, MT · CAMERON, MT
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report December 29, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 161077
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71FDG16
- Page: https://openairdocs.org/ntsb/SEA71FDG16

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1531  70/10/30   CAMERON,MONT        MOONEY M20F         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 39, 1556
        TIME - 0935                    N9646M              PX-  0  1  0  BUSINESS                  TOTAL HOURS, 1056 IN
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            TYPE, INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          JACKSON,WYO                 GREAT FALLS,MONT
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           COLLIDED WITH: DITCHES                                   LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - MISCELLANEOUS: POWERPLANT FAILURE FOR UNDETERMINED REASONS
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- INSUF PWR AVBL TO MNTN FLT.ENG NOT DISASSEMBLED FOR INSPECTION.
```

## Aircraft

- Registration: [N9646M](https://openairdocs.org/deregistered/N9646M-2017-11-21), registration cancelled 2017-11-21, S/N 670223, built 1966 (OpenAirDocs)
- Reported make and model: MOONEY M20F
- Registry model: [Mooney M20F](https://openairdocs.org/model/mooney-m20f) (registry code 5870214) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

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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