# NTSB MKC79DER57: Piper PA-25, N7739Z, Mahnomen, MN, June 16, 1978

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: June 16, 1978
- Place: Mahnomen, MN · MAHNOMEN, MN
- Location: 47.3148° N, 95.9674° W: Placed by OpenAirDocs: center of Mahnomen, MN, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.3148&lon=-95.9674&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report February 13, 1979
- Report: Brief approved by the director
- NTSB case key (mKey): 202541
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC79DER57
- Page: https://openairdocs.org/ntsb/MKC79DER57-202541

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3896  78/6/16    MAHNOMEN,MN         PIPER PA-25         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, AGE 32, 1613
        TIME - 1300                    N7739Z              PX-  0  0  0  TEST                      TOTAL HOURS, 531 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            INSTRUMENT RATED.
        NAME OF AIRPORT - MAHNOMEN MUNI
        DEPARTURE POINT             INTENDED DESTINATION
          MAHNOMEN,MN                 LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           STALL                                                    TAKEOFF: INITIAL CLIMB
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
```

## Aircraft

- Registration: [N7739Z](https://openairdocs.org/deregistered/N7739Z-2008-08-22), registration cancelled 2008-08-22, S/N 25-3916, built 1966 (OpenAirDocs)
- Reported make and model: PIPER PA-25
- Registry model: [Piper PA-25-235](https://openairdocs.org/model/piper-pa-25-235) (registry code 7102504) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Mahnomen Muni

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19780616038869A](https://openairdocs.org/incident/19780616038869A), Jun 16, 1978: Piper PA25235, Mahnomen, MN, Substantial damage

## Other investigations on N7739Z (1)

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.

- [NTSB LAX07LA163](https://openairdocs.org/ntsb/LAX07LA163), May 12, 2007: Piper PA-25-235 (N7739Z), Delta, UT, substantial damage, 1 fatal. Probable cause: the pilot's failure to maintain adequate airspeed while maneuvering, which resulted in a stall and collision with terrain.

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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