# NTSB DEN75DTC22: Piper PA-18, N4069Z, Shell, WY, May 9, 1975

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: May 9, 1975
- Place: Shell, WY · SHELL, WY
- Location: 44.5345° N, 107.7845° W: Placed by OpenAirDocs: center of Shell, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.5345&lon=-107.7845&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 5, 1975
- Report: Brief approved by the director
- NTSB case key (mKey): 148528
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN75DTC22
- Page: https://openairdocs.org/ntsb/DEN75DTC22

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-0998   75/5/9  NR.SHELL,WY           PIPER PA-18         CR-  0  0  1  MISCELLANEOUS             COMMERCIAL, FL.INSTR.,
        TIME - 1050                    N4069Z              PX-  0  0  1  HUNTING                   AGE 35, 4922 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            1815 IN TYPE, NOT
                                                                                                   INSTRUMENT RATED.
        DEPARTURE POINT             INTENDED DESTINATION         LAST ENROUTE STOP
          WORLAND,WY                  RETURN                       GREYBULL,WY
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           NOSE OVER/DOWN                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - WATER IN FUEL
        FACTOR(S)
           TERRAIN - SNOW-COVERED
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- LNDD IN DEEP SNOW.
```

## Aircraft

- Registration: [N4069Z](https://openairdocs.org/aircraft/N4069Z), registered now, S/N 18-8079 (OpenAirDocs)
- Reported make and model: PIPER PA-18
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

## Other investigations on N4069Z (2)

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 DEN00LA056](https://openairdocs.org/ntsb/DEN00LA056), Mar 12, 2000: Piper PA-18-150 (N4069Z), Belen, NM, substantial damage. Probable cause: A loss of engine power due to low cylinder compression from an open exhaust valve, and the pilot's failure to lean the fuel mixture.
- [NTSB DEN93LA056](https://openairdocs.org/ntsb/DEN93LA056), Nov 8, 1992: Piper PA-18-150 (N4069Z), Albuquerque, NM, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN AIRCRAFT CONTROL AND THE INSTRUCTOR'S INADEQUATE SUPERVISION.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.