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NTSB Report
January 18, 1985 · Bell 206L-1 · N5736K
Loiza, PR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
January 18, 1985
Injury Outcomes
No injuries (1 uninjured)
Location
Loiza, PR
Aircraft
Bell 206L-1
Tail Number
N5736K
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MIA85LA083
THE HELICOPTER PLT HAD JUST DISCHARGED HIS PASSENGERS FOLLOWING A FLT FROM AN OFF-SHORE BARGE TO A BEACH HELIPORT. WHEN HE LIFTED OFF & STARTED TO CROSS OVER A FENCE, THE ENG LOST PARTIAL POWER. THE PLT TRIED TO AVOID THE OBSTRUCTION, BUT THE TAIL BOOM HIT THE FENCE & FAILED. THE ACFT THEN HIT THE GROUND & ROLLED OVER. AN ENG TEARDOWN REVEALED THAT THE COMPRESSOR MOUNT ASSEMBLY, P/N 6898611, HAD FAILED FROM FATIGUE AT 3 PAD POSITIONS. THERE WAS EVIDENCE THAT THE COMPRESSOR SPLINE ADAPTER THEN FAILED DUE TO MISALIGNMENT. A REVIEW OF THE MAINTENANCE RECORDS SHOWED THAT A MANDATORY INSPECTION OF THE COMPRESSOR MOUNTS WAS OVERDUE.
Full Narrative
THE HELICOPTER PLT HAD JUST DISCHARGED HIS PASSENGERS FOLLOWING A FLT FROM AN OFF-SHORE BARGE TO A BEACH HELIPORT. WHEN HE LIFTED OFF & STARTED TO CROSS OVER A FENCE, THE ENG LOST PARTIAL POWER. THE PLT TRIED TO AVOID THE OBSTRUCTION, BUT THE TAIL BOOM HIT THE FENCE & FAILED. THE ACFT THEN HIT THE GROUND & ROLLED OVER. AN ENG TEARDOWN REVEALED THAT THE COMPRESSOR MOUNT ASSEMBLY, P/N 6898611, HAD FAILED FROM FATIGUE AT 3 PAD POSITIONS. THERE WAS EVIDENCE THAT THE COMPRESSOR SPLINE ADAPTER THEN FAILED DUE TO MISALIGNMENT. A REVIEW OF THE MAINTENANCE RECORDS SHOWED THAT A MANDATORY INSPECTION OF THE COMPRESSOR MOUNTS WAS OVERDUE.
Flight
Event TypeAccident
Event Time16:00 AST
Nearest AirportBeach Heliport (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206L-1
Tail NumberN5736K
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 135
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C28B · Turboshaft · 435
Seats7
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 43 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind80° @ 11 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point66 F
Altimeter29.00 inHg
Observation Time19:56
Weather SourceWFAC