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NTSB Report
May 30, 1992 · Hughes 369D · N1100A
Volcanoes Ntl P, HI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 30, 1992
Injury Outcomes
No injuries (5 uninjured)
Location
Volcanoes Ntl P, HI
Aircraft
Hughes 369D
Tail Number
N1100A
Operator
Mauna Kea Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX92LA224
DURING THE SIGHTSEEING FLIGHT THE PILOT INDICATED HE OBSERVED AN ENGINE CHIP LIGHT. HE INITIATED A PRECAUTIONARY LANDING FROM HIS CRUISE ALTITUDE OF 1,500 FT MSL. UPON REACHING 500 FT AGL, A TOTAL LOSS OF ENGINE POWER OCCURRED, AND THE PILOT INITIATED AN AUTOROTATIVE DESCENT TO A ROAD. SECONDS PRIOR TO TOUCHDOWN, A TOUR BUS OBSTRUCTED THE APPROACH PATH AND THE PILOT ALTERED HIS COURSE. DURING THE SUBSEQUENT HARD LANDING, THE TAIL BOOM WAS SEVERED. EXAMINATION OF THE ENGINE REVEALED THE #8 BEARING FAILED BECAUSE OF A LACK OF LUBRICATION. HOURS PRIOR TO THE ACCIDENT FLIGHT THE OPERATOR HAD OBSERVED THAT THE ENGINE WAS LEAKING OIL. THE OPERATOR CONTINUED TO UTILIZE THE HELICOPTER IN AIR TAXI SERVICE WITHOUT PERFORMING ANY RECORDED MAINTENANCE.
NTSB Probable Cause
THE TOTAL LOSS OF ENGINE POWER DUE TO A FAILURE OF THE NUMBER 8 BEARING. THE BEARING FAILURE WAS CAUSED BY A LACK OF ENGINE OIL SUPPLY AND INADEQUATE MAINTENANCE.
Full Narrative
DURING THE SIGHTSEEING FLIGHT THE PILOT INDICATED HE OBSERVED AN ENGINE CHIP LIGHT. HE INITIATED A PRECAUTIONARY LANDING FROM HIS CRUISE ALTITUDE OF 1,500 FT MSL. UPON REACHING 500 FT AGL, A TOTAL LOSS OF ENGINE POWER OCCURRED, AND THE PILOT INITIATED AN AUTOROTATIVE DESCENT TO A ROAD. SECONDS PRIOR TO TOUCHDOWN, A TOUR BUS OBSTRUCTED THE APPROACH PATH AND THE PILOT ALTERED HIS COURSE. DURING THE SUBSEQUENT HARD LANDING, THE TAIL BOOM WAS SEVERED. EXAMINATION OF THE ENGINE REVEALED THE #8 BEARING FAILED BECAUSE OF A LACK OF LUBRICATION. HOURS PRIOR TO THE ACCIDENT FLIGHT THE OPERATOR HAD OBSERVED THAT THE ENGINE WAS LEAKING OIL. THE OPERATOR CONTINUED TO UTILIZE THE HELICOPTER IN AIR TAXI SERVICE WITHOUT PERFORMING ANY RECORDED MAINTENANCE.
Flight
Event TypeAccident
Event Time13:25 HST
Nearest Airport0nm N
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 369D
Tail NumberN1100A
Aircraft CategoryHeli
DamageSubstantial
OperatorMauna Kea Helicopters
Operating RulePart 135
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 420
Seats5
People & Injuries
Injury SummaryNo injuries (5 uninjured)
Fatal0
Serious0
Minor0
Uninjured5
Total5
Crew 1Age 35 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind45° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter0
Weather SourcePILO