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NTSB Report
July 28, 2021 · Enstrom F-28A · N46MU
Mountain Home, ID
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 28, 2021
Injury Outcomes
No injuries (1 uninjured)
Location
Mountain Home, ID
Aircraft
Enstrom F-28A (1974)
Tail Number
N46MU
Operator
Holmes Robert Theodore
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR21LA293
The pilot reported that, while the helicopter was in the hanger, he put 4 gallons of fuel into the left fuel tank. He then intended to hover taxi to the fuel island for fuel. He observed people and an aircraft near the fuel island, and he hover taxied to a dirt area. While about 12-15 ft above ground level, the engine had a complete loss of power. He further reported that he was too low to autorotate, landed hard on uneven terrain and collapsed the left skid. An inspection revealed that both fuel tanks were empty. The helicopter sustained substantial damage to the fuselage and main rotor blades. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
NTSB Probable Cause
The pilot's improper fuel planning and improper in-flight decision-making, which resulted in a total loss of engine power due to fuel exhaustion and a subsequent hard landing on uneven terrain.
Full Narrative
The pilot reported that, while the helicopter was in the hanger, he put 4 gallons of fuel into the left fuel tank. He then intended to hover taxi to the fuel island for fuel. He observed people and an aircraft near the fuel island, and he hover taxied to a dirt area. While about 12-15 ft above ground level, the engine had a complete loss of power. He further reported that he was too low to autorotate, landed hard on uneven terrain and collapsed the left skid. An inspection revealed that both fuel tanks were empty. The helicopter sustained substantial damage to the fuselage and main rotor blades. The pilot reported that there were no preaccident mechanical malfunctions or failures with the helicopter that would have precluded normal operation.
Flight
Event TypeAccident
Event Time11:30 MDT
Nearest AirportMountain Home Municipal Airpor (0.5nm N)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftEnstrom F-28A
Tail NumberN46MU
Aircraft CategoryHeli
DamageSubstantial
OperatorHolmes Robert Theodore
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-C1A · Reciprocating · 205
Seats3
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 67 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 12 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point46 F
Altimeter30.14 inHg
Observation Time11:58
Weather SourceWFAC