NTSB Identification: DEN77FTE76
14 CFR Part 91 General Aviation
Aircraft: STINSON 108-2, registration: N9389K----------------------------------------------------------------------------------------------------------------------------
FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA
F S M/N PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-3231 77/8/20 BOULDER, CO STINSON 108-2 CR- 0 0 1 NONCOMMERCIAL PRIVATE, AGE 34, 132
TIME - 1130 N9389K PX- 0 0 2 PLEASURE/PERSONAL TRANSP TOTAL HOURS, 96 IN TYPE,
DAMAGE-SUBSTANTIAL OT- 0 0 0 NOT INSTRUMENT RATED.
NAME OF AIRPORT - BOULDER MUNI.
DEPARTURE POINT INTENDED DESTINATION
BOULDER, CO LOCAL
TYPE OF ACCIDENT PHASE OF OPERATION
ENGINE FAILURE OR MALFUNCTION TAKEOFF: INITIAL CLIMB
STALL: SPIN LANDING: FINAL APPROACH
PROBABLE CAUSE(S)
PILOT IN COMMAND - ATTEMPTED OPERATION W/KNOWN DEFICIENCIES IN EQUIPMENT
PILOT IN COMMAND - INADEQUATE PREFLIGHT PREPARATION AND/OR PLANNING
POWERPLANT - IGNITION SYSTEM: SPARK PLUG
POWERPLANT - ENGINE STRUCTURE: VALVE ASSEMBLIES
PILOT IN COMMAND - FAILED TO OBTAIN/MAINTAIN FLYING SPEED
PARTIAL POWER LOSS - PARTIAL LOSS OF POWER - 1 ENGINE
EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
FIRE AFTER IMPACT
REMARKS- NO. 6 CYLINDER PLUGS FOULED AND EXHAUST VALVE LEAKING
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