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NTSB Report
February 29, 1992 · Bell 212 · N92AL
Morgan City, LA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 29, 1992
Injury Outcomes
1 injury (1 fatality)
Location
Morgan City, LA
Aircraft
Bell 212
Tail Number
N92AL
Operator
Offshore Logistics
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW92FA077
AN ATP RATED HELICOPTER PILOT EXPERIENCED AN INFLIGHT BREAKUP WHILE AT CRUISE FLIGHT AT 1,800 FEET MSL. CONTROL WAS LOST FOLLOWING MAST BUMPING AND MAIN ROTOR SEPARATION. THE MAIN WRECKAGE OF THE HELICOPTER WAS LOCATED IN A HEAVILY WOODED MARSH, IN ABOUT 5 FEET OF WATER, RESTING NEARLY UPSIDE DOWN. DEBRIS AND AIRFRAME COMPONENTS WERE FOUND SCATTERED FOR ABOUT 1,000 YARDS PRIOR TO THE MAIN WRECKAGE. ONE WITNESS OBSERVED THE MAIN ROTOR SYSTEM SEPARATE FROM THE AIRFRAME. THE MAIN ROTOR HUB, WITH BOTH MAIN ROTOR BLADES STILL ATTACHED, WAS FOUND ABOUT 200 YARDS FROM THE MAIN WRECKAGE. THE CAUSE OF THE MAST SEPARATION COULD NOT BE DETERMINED DUE TO THE LARGE NUMBER OF CRITICAL COMPONENTS THAT COULD NOT BE RECOVERED.
NTSB Probable Cause
THE INFLIGHT SEPARATION OF THE MAIN ROTOR SYSTEM AS RESULTS OF THE MAIN ROTOR STATIC STOP CONTACTING THE MAST FOR UNDETERMINED REASONS.
Full Narrative
AN ATP RATED HELICOPTER PILOT EXPERIENCED AN INFLIGHT BREAKUP WHILE AT CRUISE FLIGHT AT 1,800 FEET MSL. CONTROL WAS LOST FOLLOWING MAST BUMPING AND MAIN ROTOR SEPARATION. THE MAIN WRECKAGE OF THE HELICOPTER WAS LOCATED IN A HEAVILY WOODED MARSH, IN ABOUT 5 FEET OF WATER, RESTING NEARLY UPSIDE DOWN. DEBRIS AND AIRFRAME COMPONENTS WERE FOUND SCATTERED FOR ABOUT 1,000 YARDS PRIOR TO THE MAIN WRECKAGE. ONE WITNESS OBSERVED THE MAIN ROTOR SYSTEM SEPARATE FROM THE AIRFRAME. THE MAIN ROTOR HUB, WITH BOTH MAIN ROTOR BLADES STILL ATTACHED, WAS FOUND ABOUT 200 YARDS FROM THE MAIN WRECKAGE. THE CAUSE OF THE MAST SEPARATION COULD NOT BE DETERMINED DUE TO THE LARGE NUMBER OF CRITICAL COMPONENTS THAT COULD NOT BE RECOVERED.
Flight
Event TypeAccident
Event Time13:50 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 212
Tail NumberN92AL
Aircraft CategoryHeli
DamageDestroyed
OperatorOffshore Logistics
Operating RulePart 91
Engines2
Engine TypeTurboshaft
Engine DetailsP&W · PT6T-3B · Turboshaft · 1290
Seats15
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 47 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind230° @ 9 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point54
Altimeter30.00 inHg
Observation Time21:31
Weather SourceWFAC