# NTSB SEA71FDA15: Stinson 108-2, N171C, Alzada, MT, March 19, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: March 19, 1971
- Place: Alzada, MT · ALZADA, MT
- Location: 45.0205° N, 104.4128° W: Placed by OpenAirDocs: center of Alzada, MT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=45.0205&lon=-104.4128&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 16, 1971
- Report: Brief approved by the director
- NTSB case key (mKey): 160538
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA71FDA15
- Page: https://openairdocs.org/ntsb/SEA71FDA15

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1028  71/3/19  NR.ALZADA,MONT        STINSON 108-2       CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 43, 2035
        TIME - 0630                    N171C               PX-  0  0  0  BUSINESS                  TOTAL HOURS, 3 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
         ALZADA,MONT                  LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           GROUND-WATER LOOP-SWERVE                                 LANDING: ROLL
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
           PILOT IN COMMAND - FAILED TO MAINTAIN DIRECTIONAL CONTROL
        FACTOR(S)
           PILOT IN COMMAND - LACK OF FAMILIARITY WITH AIRCRAFT
           WEATHER - UNFAVORABLE WIND CONDITIONS
        WEATHER BRIEFING - NO RECORD OF BRIEFING RECEIVED
        WEATHER FORECAST - UNKNOWN/NOT REPORTED
        SKY CONDITION                                            CEILING AT ACCIDENT SITE
          UNKNOWN/NOT REPORTED                                      3000
        VISIBILITY AT ACCIDENT SITE                              PRECIPITATION AT ACCIDENT SITE
          5 OR OVER(UNLIMITED)                                     NONE
        OBSTRUCTIONS TO VISION AT ACCIDENT SITE                  TEMPERATURE-F
          NONE                                                      20
        WIND DIRECTION-DEGREES                                   WIND VELOCITY-KNOTS
          360                                                       25
        TYPE OF WEATHER CONDITIONS                               TYPE OF FLIGHT PLAN
          VFR                                                      NONE
        REMARKS- LNDD ON ROAD HDG ENE,FLDS COVERED BY SNOW.
```

## Aircraft

- Registration: [N171C](https://openairdocs.org/aircraft/N171C), registered now, S/N 108-3171, built 1947 (OpenAirDocs)
- Reported make and model: STINSON 108-2
- Registry model: [Stinson 108-2](https://openairdocs.org/model/stinson-108-2) (registry code 9230406) (OpenAirDocs)
- Registry engine: [Franklin 6A4165 series](https://openairdocs.org/engine/franklin-6a4165-series) (registry code 27025, 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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