# NTSB DEN69D0136: Zalewski Mong, N4955E, Rock Sprgs, WY, October 30, 1968

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Closed
- Date: October 30, 1968
- Place: Rock Sprgs, WY · ROCK SPRGS, WY
- Location: 41.5947° N, 109.2209° W: Placed by OpenAirDocs: center of Rock Springs, WY, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.5947&lon=-109.2209&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report December 30, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 108043
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN69D0136
- Page: https://openairdocs.org/ntsb/DEN69D0136

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3791  68/10/30   ROCK SPRGS,WYO      ZALEWSKI MONG       CR-  0  0  1  NONCOMMERCIAL             COMMERCIAL, AGE 50, 2005
        TIME - 0815                    N4955E              PX-  0  0  0  BUSINESS                  TOTAL HOURS, 289 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ROCK SPRINGS
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE CONTROLS: MIXTURE CONTROL ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           MISCELLANEOUS ACTS,CONDITIONS - FUEL STARVATION
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- CONTROL WIRE CAME OFF MIXTURE CONTROL.
```

## Aircraft

- Registration: N4955E (not matched to a registry record)
- Reported make and model: ZALEWSKI MONG
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Rock Springs

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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