# NTSB SEA70A0001: Mooney M20E, N9054V, Helena, MT, July 3, 1969

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Closed
- Date: July 3, 1969
- Place: Helena, MT · HELENA, MT
- Location: 46.5955° N, 112.0187° W: Placed by OpenAirDocs: center of Helena, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=46.5955&lon=-112.0187&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal, 1 serious
- Status: Completed, report February 25, 1970
- Report: Brief approved by the director
- NTSB case key (mKey): 166352
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA70A0001
- Page: https://openairdocs.org/ntsb/SEA70A0001

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3105   69/7/3  NR.HELENA,MONT        MOONEY M20E         CR-  0  1  0  COMMERCIAL                COMMERCIAL, FL.INSTR.,
        TIME - 0651                    N9054V              PX-  2  0  0  POWER/PIPELINE            AGE 27, 595 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            88 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          GREAT FALLS,MONT           UNKNOWN/NOT REPORTED
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL: MUSH                                              IN FLIGHT: OTHER
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - IMPROPER IN-FLIGHT DECISIONS OR PLANNING
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        FACTOR(S)
           WEATHER - DOWNDRAFT,UPDRAFTS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - FORECAST SUBSTANTIALLY CORRECT
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          OVERCAST                                                  9200
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  WIND DIRECTION-DEGREES
          NONE                                                     225
        WIND VELOCITY-KNOTS                                      TYPE OF WEATHER CONDITIONS
           15                                                      VFR
        TYPE OF FLIGHT PLAN
          NONE
        REMARKS- ATTEMPTED FLT UPSLOPE OF MNTN RIDGE AT LOW ALT.
```

## Aircraft

- Registration: [N9054V](https://openairdocs.org/deregistered/N9054V-1971-04-12), registration cancelled 1971-04-12, S/N 690005 (OpenAirDocs)
- Reported make and model: MOONEY M20E
- Registry model: [Mooney M20E](https://openairdocs.org/model/mooney-m20e) (registry code 5870212) (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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