Aircraft Accident/Incident Report

Morgan City, Louisiana 70380
Saturday, February 29, 1992 13:50 CST

NTSB Narrative Summary Released at Completion of Accident

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 Narrative

THE INFLIGHT SEPARATION OF THE MAIN ROTOR SYSTEM AS RESULTS OF THE MAIN ROTOR STATIC STOP CONTACTING THE MAST FOR UNDETERMINED REASONS.

Event Information

Type of Event Accident
Event Date 2/29/1992
Event Day of the Week Saturday
Time of Event 1350
Event Time Zone Central Standard Time
Event City MORGAN CITY
Event State LOUISIANA
Event Country --
Zipcode of the event site 70380
Event Date Year 1992
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1531 Central Standard Time
Direction of event from weather observation facility (degrees) 180
Weather Observation Facility ID PTN
Elevation of weather observation facility 9
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 22
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 9
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 750
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 325
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 46498
Date of most recent change to record Dec 11 2000 2:44PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N92AL
NTSB Number FTW92FA077
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BELL
Aircraft Model 212
Aircraft Series Identifier 212
Aircraft Serial Number 30828
Certified Max Gross Weight 11200
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 15
Number of Engines 2
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Feb 9 1992 12:00AM
Airframe hours since last inspection 21
Airframe Hours 10227
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name OFFSHORE LOGISTICS, INC.
Aircraft Owner Street Address P.O BOX 5-C
Aircraft Owner City LAFAYETTE
Aircraft Owner State LA
Aircraft Owner Country
Aircraft Owner Zipcode 70505
Operator is an individual? --
Operator Name OFFSHORE LOGISTICS, INC.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O BOX 5-C
Operator City LAFAYETTE
Operator State LA
Operator Country
Operator Zip code 70505
Operator Code ALGA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Positioning
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code VEC
Departure City VENICE
Departure State LA
Departure Country
Departure Time 1415
Departure Time Zone CST
Destination Same as Local Flt --
Destination Airport Code ARA
Destination City NEW IBERIA
Destination State LA
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --