# NTSB MKC67D0193: Piper PA-22, N633A, Queen City, MO, August 11, 1966

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 11, 1966
- Place: Queen City, MO · QUEEN CITY, MO
- Location: 40.4118° N, 92.5667° W: Placed by OpenAirDocs: center of Queen City, MO, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=40.4118&lon=-92.5667&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 3, 1966
- Report: Brief approved by the director
- NTSB case key (mKey): 121845
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC67D0193
- Page: https://openairdocs.org/ntsb/MKC67D0193

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3340  66/8/11    QUEEN CITY MO       PIPER PA-22         CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 39, 169
        TIME - 1630                    N633A               PX-  0  0  1  BUSINESS                  TOTAL HOURS, ALL IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           TERRAIN - ROUGH/UNEVEN
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        COMPLETE POWER LOSS - COMPLETE ENGINE FAILURE/FLAMEOUT-1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NO.3 EXHAUST VALVE FAILED.
```

## Aircraft

- Registration: [N633A](https://openairdocs.org/aircraft/N633A), registered now, S/N 22-36, built 1951 (OpenAirDocs)
- Reported make and model: PIPER PA-22
- Registry model: [Piper PA-22](https://openairdocs.org/model/piper-pa-22) (registry code 7102202) (OpenAirDocs)
- Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage

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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