# NTSB DEN66F0154: Piper PA-23, N1331P, Duchesne, UT, November 7, 1965

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 7, 1965
- Place: Duchesne, UT · DUCHESNE, UT
- Location: 40.1753° N, 110.3941° W: Placed by OpenAirDocs: center of Duchesne, UT, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.1753&lon=-110.3941&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 13, 1965
- Report: Brief approved by the director
- NTSB case key (mKey): 175149
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN66F0154
- Page: https://openairdocs.org/ntsb/DEN66F0154

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3218   65/11/7   DUCHESNE UT         PIPER PA-23         CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 40, 500
        TIME - 1730                    N1331P              PX-  0  0  0  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 62 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - DUCHESNE
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           STALL: MUSH                                              LANDING: GO-AROUND
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: CYLINDER ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING ON AIRPORT/SEAPLANE BASE/HELIPT.
        REMARKS- NO.1 CYLINDER ASSEMBLY FAILED.
```

## Aircraft

- Registration: N1331P (not matched to a registry record)
- Reported make and model: PIPER PA-23
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Duchesne

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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