# NTSB CHI69D0157: Commonwlth 185, N92904, Lapeer, MI, August 4, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: August 4, 1968
- Place: Lapeer, MI · LAPEER, MI
- Location: 43.0452° N, 83.3264° W: Placed by OpenAirDocs: center of Lapeer, MI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=43.0452&lon=-83.3264&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 15, 1968
- Report: Brief approved by the director
- NTSB case key (mKey): 108797
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI69D0157
- Page: https://openairdocs.org/ntsb/CHI69D0157

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-2691   68/8/4    LAPEER,MICH         COMMONWLTH 185      CR-  0  0  1  NONCOMMERCIAL             PRIVATE, AGE 38, 650
        TIME - 2045                    N92904              PX-  0  0  1  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 300 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - DUPONT-LAPEER
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           PROPELLER/ROTOR FAILURE: PROPELLER                       IN FLIGHT: NORMAL CRUISE
           GEAR COLLAPSED                                           LANDING: ROLL
        PROBABLE CAUSE(S)
           POWERPLANT - PROPELLER AND ACCESSORIES: BLADES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        FACTOR(S)
           MISCELLANEOUS ACTS,CONDITIONS - SEPARATION IN FLIGHT
           MISCELLANEOUS ACTS,CONDITIONS - OVERLOAD FAILURE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  PROP/ENGINE VIBRATION
        REMARKS- OUTBOARD SECTION OF THE METAL LEADING EDGE STRIP FAILED.
```

## Aircraft

- Registration: [N92904](https://openairdocs.org/aircraft/N92904), registered now, S/N 1635, built 1946 (OpenAirDocs)
- Reported make and model: COMMONWLTH 185
- Registry model: [Commonwealth 185](https://openairdocs.org/model/commonwealth-185) (registry code 2370608) (OpenAirDocs)
- Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Dupont-Lapeer

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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