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NTSB Report
November 1, 1991 · North American Navion · N8631H
Okeechobee, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 1, 1991
Injury Outcomes
1 injury (1 minor injury)
Location
Okeechobee, FL
Aircraft
North American Navion
Tail Number
N8631H
Operator
Swartz Grant L
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MIA92LA021
AFTER TAKEOFF WITH THE FUEL SELECTOR POSITIONED TO THE AUXILIARY FUEL TANK, THE ENG QUIT DUE TO FUEL EXHAUSTION IN THAT TANK. THE PLT REPOSITIONED THE FUEL SELECTOR TO THE MAIN FUEL TANK POSITION WHICH CONTAINED AN ADEQUATE SUPPLY OF FUEL, BUT THE ENG STARTED ONLY MOMENTARILY, THEN QUIT. THE PILOT LANDED THE ACFT GEAR UP IN A FIELD. EXAM OF THE ACFT BY AN FAA AIRWORTHINESS INSPECTOR REVEALED THAT A RUBBER FUEL LINE WHICH CONNECTS THE MAIN TANK TO THE FUEL SELECTOR WAS BLOCKED BY CONTAMINANTS. THE PLT HAD IN THE PAST OPERATED THE ENG USING AUTOMOTIVE FUEL WITHOUT AN STC. HE WAS ALSO AWARE BEFORE THE ACCIDENT THAT THE ENG WOULD LOSE POWER WITH THE FUEL SELECTOR POSITIONED TO THE MAIN TANK.
NTSB Probable Cause
OPERATION BY THE OWNER/PILOT-IN-COMMAND WITH KNOWN DEFICIENCIES IN EQUIPMENT AND FUEL STARVATION DUE TO A BLOCKED FUEL LINE.
Full Narrative
AFTER TAKEOFF WITH THE FUEL SELECTOR POSITIONED TO THE AUXILIARY FUEL TANK, THE ENG QUIT DUE TO FUEL EXHAUSTION IN THAT TANK. THE PLT REPOSITIONED THE FUEL SELECTOR TO THE MAIN FUEL TANK POSITION WHICH CONTAINED AN ADEQUATE SUPPLY OF FUEL, BUT THE ENG STARTED ONLY MOMENTARILY, THEN QUIT. THE PILOT LANDED THE ACFT GEAR UP IN A FIELD. EXAM OF THE ACFT BY AN FAA AIRWORTHINESS INSPECTOR REVEALED THAT A RUBBER FUEL LINE WHICH CONNECTS THE MAIN TANK TO THE FUEL SELECTOR WAS BLOCKED BY CONTAMINANTS. THE PLT HAD IN THE PAST OPERATED THE ENG USING AUTOMOTIVE FUEL WITHOUT AN STC. HE WAS ALSO AWARE BEFORE THE ACCIDENT THAT THE ENG WOULD LOSE POWER WITH THE FUEL SELECTOR POSITIONED TO THE MAIN TANK.
Flight
Event TypeAccident
Event Time09:15 EST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftNorth American Navion
Tail NumberN8631H
Aircraft CategoryAir
DamageSubstantial
OperatorSwartz Grant L
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · E-225-4 · Reciprocating · 225
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 73 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind90° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter30.00 inHg
Weather SourcePILO