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NTSB Report
January 14, 1993 · Beech 58P · N550TH
Hanksville, UT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
January 14, 1993
Injury Outcomes
No injuries (1 uninjured)
Location
Hanksville, UT
Aircraft
Beech 58P
Tail Number
N550TH
Operator
Montelena Associates
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA93LA051
WHILE IN CRUISING FLIGHT, THE PILOT NOTICED THAT THE GAUGES INDICATED A FUEL IMBALANCE. AS THE IMBALANCE INDICATION BECAME GREATER, THE PILOT BEGAN TO SEARCH FOR A SUITABLE NEARBY ALTERNATE. FINDING THE NEAREST ALTERNATE TO BE BELOW APPROACH MINIMUMS, AND BEING CONVINCED THAT THE IMBALANCE WAS ONLY AN INDICATION PROBLEM, HE ELECTED TO CONTINUE ON TO THE ORIGINAL DESTINATION. WHEN BOTH ENGINES QUIT, THE LEFT GAUGE WAS AT 0, AND THE RIGHT GAUGE WAS INDICATING NEAR FULL. DURING THE RESTART ATTEMPTS, THE PILOT FAILED TO SELECT EITHER ENGINE TO THE RIGHT FUEL TANK, WHICH WAS LATER FOUND TO CONTAIN FUEL. WHEN EXAMINED AT THE SCENE OF THE ACCIDENT, THE POSITION OF BOTH FUEL VALVES CORRECTLY MATCHED THE POSITION OF THE CORRESPONDING FUEL SELECTOR LEVER. FURTHER INVESTIGATION REVEALED NO MALFUNCTION, DAMAGE, OR DISCREPANCIES WITH EITHER VALVE.
NTSB Probable Cause
AN IMPROPER FUEL SELECTOR VALVE POSITION, FUEL STARVATION, AND INADEQUATE REMEDIAL ACTION. FACTORS INCLUDE SOFT, ROUGH TERRAIN.
Full Narrative
WHILE IN CRUISING FLIGHT, THE PILOT NOTICED THAT THE GAUGES INDICATED A FUEL IMBALANCE. AS THE IMBALANCE INDICATION BECAME GREATER, THE PILOT BEGAN TO SEARCH FOR A SUITABLE NEARBY ALTERNATE. FINDING THE NEAREST ALTERNATE TO BE BELOW APPROACH MINIMUMS, AND BEING CONVINCED THAT THE IMBALANCE WAS ONLY AN INDICATION PROBLEM, HE ELECTED TO CONTINUE ON TO THE ORIGINAL DESTINATION. WHEN BOTH ENGINES QUIT, THE LEFT GAUGE WAS AT 0, AND THE RIGHT GAUGE WAS INDICATING NEAR FULL. DURING THE RESTART ATTEMPTS, THE PILOT FAILED TO SELECT EITHER ENGINE TO THE RIGHT FUEL TANK, WHICH WAS LATER FOUND TO CONTAIN FUEL. WHEN EXAMINED AT THE SCENE OF THE ACCIDENT, THE POSITION OF BOTH FUEL VALVES CORRECTLY MATCHED THE POSITION OF THE CORRESPONDING FUEL SELECTOR LEVER. FURTHER INVESTIGATION REVEALED NO MALFUNCTION, DAMAGE, OR DISCREPANCIES WITH EITHER VALVE.
Flight
Event TypeAccident
Event Time12:30 MST
Nearest AirportHanksville Airport (0nm)
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech 58P
Tail NumberN550TH
Aircraft CategoryAir
DamageSubstantial
OperatorMontelena Associates
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520 · Reciprocating · 325
Seats6
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 30 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingOvercast 1000 ft
Temperature / Dew Point37 C / 0 C
Altimeter0
Weather SourcePILO