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NTSB Report
July 20, 1991 · Fleet FL-80 · CFDPZ
Havre, MT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 20, 1991
Injury Outcomes
1 injury (1 minor injury)
Location
Havre, MT
Aircraft
Fleet FL-80
Tail Number
CFDPZ
Operator
Thorpe John
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
SEA91LA190
WHILE IN CRUISE FLIGHT, THE ENGINE SUDDENLY LOST PARTIAL POWER. THE PILOT APPLIED FULL POWER; HOWEVER, THE ENGINE DID NOT RESPOND. UNABLE TO LAND AT AN AIRPORT, A FORCED LANDING WAS INITIATED TO AN OPEN FIELD. DURING THE LANDING ROLL, THE AIRPLANE COLLIDED WITH THE TERRAIN. A POST CRASH INSPECTION OF THE ENGINE REVEALED THAT THE ENGINE DRIVEN FUEL INJECTION PUMP METERING VALVE SHAFT WAS LOOSE IN THE PUMP HOUSING. THE SHAFT WAS PUSHED BACK INTO POSITION AND THE ENGINE WAS STARTED AND FOUND TO RUN AND MAINTAIN THE REQUIRED RPM.
NTSB Probable Cause
THE ENGINE DRIVEN FUEL INJECTION PUMP METERING VALVE SHAFT WAS LOOSE. A FACTOR TO THE ACCIDENT WAS: INADEQUATE ANNUAL INSPECTION.
Full Narrative
WHILE IN CRUISE FLIGHT, THE ENGINE SUDDENLY LOST PARTIAL POWER. THE PILOT APPLIED FULL POWER; HOWEVER, THE ENGINE DID NOT RESPOND. UNABLE TO LAND AT AN AIRPORT, A FORCED LANDING WAS INITIATED TO AN OPEN FIELD. DURING THE LANDING ROLL, THE AIRPLANE COLLIDED WITH THE TERRAIN. A POST CRASH INSPECTION OF THE ENGINE REVEALED THAT THE ENGINE DRIVEN FUEL INJECTION PUMP METERING VALVE SHAFT WAS LOOSE IN THE PUMP HOUSING. THE SHAFT WAS PUSHED BACK INTO POSITION AND THE ENGINE WAS STARTED AND FOUND TO RUN AND MAINTAIN THE REQUIRED RPM.
Flight
Event TypeAccident
Event Time12:05 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftFleet FL-80
Tail NumberCFDPZ
Aircraft CategoryAir
DamageSubstantial
OperatorThorpe John
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C85-12FJ · Reciprocating · 85
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 65 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility40 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time12:05
Weather SourcePILO