# NTSB ANC72DAA31: Piper PA-12, N3571M, Timber Lk, AK, May 6, 1972

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: May 6, 1972
- Place: Timber Lk, AK · TIMBER LK, AK
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report February 10, 1973
- Report: Brief approved by the director
- NTSB case key (mKey): 166088
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC72DAA31
- Page: https://openairdocs.org/ntsb/ANC72DAA31

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-1741   72/5/6    TIMBER LK ,ALAS     PIPER PA-12         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 42, 9777
        TIME - 1100                    N3571M              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 502 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION
          FAIRBANKS,ALAS              TIMBER LK ,ALAS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - SELECTED UNSUITABLE TERRAIN
        FACTOR(S)
           TERRAIN - SNOW-COVERED
        REMARKS- FROZEN LAKE COVERED WITH 2FT OF SNOW.WHEEL EQPD.
```

## Aircraft

- Registration: [N3571M](https://openairdocs.org/aircraft/N3571M), registered now, S/N 12-2419, built 1947 (OpenAirDocs)
- Reported make and model: PIPER PA-12
- Registry model: [Piper PA-12](https://openairdocs.org/model/piper-pa-12) (registry code 7101202) (OpenAirDocs)
- Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (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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