SEA72DTI08

NTSB accident investigation · Mooney M20C · Great Falls, MT · October 3, 1971

Accident · Serious injuriesClosed
Date
October 3, 1971
Place
Great Falls, MT · GREAT FALLS, MT
Injuries
2 serious, 2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N78939Mooney M20C
Status
Completed · report June 12, 1972
Report
Brief approved by the director
Case key
164266

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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NTSB brief

NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.

----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3954   71/10/3   GREAT FALLS,MONT    MOONEY M20C         CR-  0  1  0  NONCOMMERCIAL             PRIVATE, AGE 48, 204
        TIME - 0825                    N78939              PX-  0  1  2  PLEASURE/PERSONAL TRANSP  TOTAL HOURS, 39 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - GREAT FALLS INT.
        DEPARTURE POINT             INTENDED DESTINATION
          GREAT FALLS,MONT            LOCAL
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            LANDING: FINAL APPROACH
           COLLISION WITH GROUND/WATER: CONTROLLED                  LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           POWERPLANT - ENGINE CONTROLS: THROTTLE-POWER LEVER ASSEMBLIES
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
        PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
                                  SUSPECTED MECHANICAL DISCREPANCY
        REMARKS- THROTTLE CONTROL CABLE FAILED.METAL SLEEVE WAS FOUND LOOSE WHERE IT IS SWAGED TO CLEVIS END.

Aircraft

Registration
N78939
Reported as
Mooney M20C
Category
Airplane
Engine
reciprocating
Damage
Substantial damage
Airport
Great Falls Int.

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.