Vermilion 200 Airport
Aircraft Accident/Incident Report

E. Cameron 200, -- 00000
Saturday, October 28, 2000 16:37 CDT

NTSB Narrative Summary Released at Completion of Accident

The helicopter departed from a helipad located on an offshore oil platform, and was 3 minutes from landing at a refueling helipad on another platform, when the pilot transmitted two distress calls indicating the helicopter was "going down." There were no witnesses to the accident; however, 9 minutes after the distress calls were heard, the helicopter was found floating inverted in 3-4 foot seas. Subsequently, the helicopter sank and was later recovered and examined. Examination of the helicopter revealed no anomalies with the airframe or flight control systems. Examination of the engine revealed that the first and second stage turbine blades were fractured due to extreme heating. One blade of the second stage tubine disk had liberated from its retention slot, and all the blade roots and retention slots of this disk exhibited permanent outboard deformation, due to a combination of centripetal forces from engine operation and excessive heat. In contrast, the blade roots and retention slots of the first stage turbine disk did not exhibit evidence of outboard deformation, most likely since they were located further away from the heat source. The rear bearing assembly (located aft of the second stage disk) was contaminated with coke. The coking suggests that oil was leaking from the engine and migrating from the rear bearing assembly. The aft side of the second stage turbine disk displayed dark stain marks in the form of streaks. A passage exists that would allow oil to flow from the rear bearing to the aft face of the second stage turbine disk. Oil that strikes the disk would flow into the hot stream of gases and auto-ignite, starting a fire. Oil migration can occur if the rear bearing scavenge and vent tubes become blocked; however, the scavenge and vent tubes were checked during the engine examination and were not found blocked.

NTSB Probable Cause Narrative

the loss of engine power due to an internal engine oil leak that started an internal engine fire and the pilot's inadequate autorotation which resulted in a hard landing. A contributing factor to the accident was the rough water condition.

Event Information

Type of Event Accident
Event Date 10/28/2000
Event Day of the Week Saturday
Time of Event 1637
Event Time Zone Central Daylight Time
Event City E. Cameron 200
Event State GULF OF MEXICO
Event Country --
Zipcode of the event site 00000
Event Date Year 2000
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 284417N
Event Location Longitude 0923748W
Event Location Airport Vermilion 200
Event Location Nearest Airport ID V200
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 3
Degrees magnetic from airport 225
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Witness
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 5000
Sky/Lowest/Cloud Conditions Scattered
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) 26
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 100
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation --
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) 11991
NTSB Notification Source FAA
NTSB Notification Date Oct 28 2000 12:00AM
NTSB Notification Time 1830
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 15 2002 12:15PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N26WW
NTSB Number FTW01FA017
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Company VFR
Flight plan Was Activated? No
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Aerospatiale
Aircraft Model AS-350BA
Aircraft Series Identifier AS-350BA
Aircraft Serial Number 1229
Certified Max Gross Weight 4630
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Oct 24 2000 12:00AM
Airframe hours since last inspection 3
Airframe Hours 6734
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Textron Financial Corporation Inc.
Aircraft Owner Street Address 9001 Airport Freeway, Suite 800
Aircraft Owner City Fort Worth
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 76180
Operator is an individual? No
Operator Name Tex-Air Helicopters Inc.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 8919 Paul B. Koonce Street
Operator City Houston
Operator State TX
Operator Country USA
Operator Zip code 77061
Operator Code TXEA
Owner has at least one certificate --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
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 --
Departure Point Same as Event No
Departure Airport Code --
Departure City E. Cameron 231A
Departure State GM
Departure Country --
Departure Time 1630
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code --
Destination City Vermillion 200
Destination State GM
Destination Country --
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 20 2002 6:36PM
User who most recently changed record SNYG
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --