# NTSB MKC67F0079: Cougar O-P, N4776T, St Charles, MO, June 30, 1966

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Closed
- Date: June 30, 1966
- Place: St Charles, MO · ST CHARLES, MO
- Location: 38.7957° N, 90.5154° W: Placed by OpenAirDocs: center of St. Charles, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.7957&lon=-90.5154&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report January 31, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 171575
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC67F0079
- Page: https://openairdocs.org/ntsb/MKC67F0079

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
2-0492  66/6/30    ST CHARLES MO       COUGAR O-P          CR-  0  1  0  MISCELLANEOUS             COMMERCIAL, AGE 50, 1200
        TIME - 0950                    N4776T              PX-  0  0  0  TEST                      TOTAL HOURS, 1 IN TYPE,
                                       DAMAGE-DESTROYED    OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - ST.CHARLES
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           UNDERSHOOT                                               LANDING: FINAL APPROACH
        PROBABLE CAUSE(S)
           PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
           MISCELLANEOUS ACTS,CONDITIONS - FUEL EXHAUSTION
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - PRECAUTIONARY LANDING ON AIRPORT
         FIRE AFTER IMPACT
        REMARKS- PILOT WAS RETURNING TO ARPT.DUE OVERHEATED ENG.LATER DETERMINED NO3 CYL.WALL AND TOP RING BROKEN.
```

## Aircraft

- Registration: [N4776T](https://openairdocs.org/deregistered/N4776T-1971-06-08), registration cancelled 1971-06-08, S/N 1 (OpenAirDocs)
- Reported make and model: COUGAR O-P
- Registry model: [Osborne-Posey O-P COUGAR](https://openairdocs.org/model/osborne-posey-o-p-cougar) (registry code 6250135) (OpenAirDocs)
- Category: Airplane, amateur-built
- Engines: reciprocating
- Damage: Destroyed
- Airport: St.Charles

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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