Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
So. Marsh 275
Tuesady, April 23, 1991 7:45 CDT
NTSB Narrative Summary Released at Completion of Accident
THE PILOT DID NOT MAKE THE REQUIRED 15 MINUTE RADIO CHECK AFTER DEPARTURE FROM AN OFFSHORE RIG AND A RADIO AND AIR SEARCH WAS INITIATED. ABOUT TWO HOURS LATER, DEBRIS WAS FOUND FLOATING ABOUT THREE MILES FROM THE DEPARTURE POINT. RECOVERED DEBRIS INDICATED THAT THE AIRCRAFT HAD EXPERIENCED AN INFLIGHT SEPARATION OF THE VERTICAL FIN AND SUBSEQUENT MAST BUMPING. METALLURGICAL EXAMINATION OF THE VERTICAL FIN ATTACHMENT FITTINGS REVEALED THAT THEY HAD SEPARATED DUE TO FATIGUE INDUCED BY CORROSION AND CORROSION PITTING. THE EXAMINATION ALSO REVEALED THAT THE OPERATOR HAD UNSUCCESSFULLY ATTEMPTED TO COMBAT THE CORROSION DURING A REFURBISHMENT OF THE AIRFRAME. ALL OF THE FATIGUE FRACTURES APPEARED OLD AND ONE HAD PAINT IN THE FRACTURE.
NTSB Probable Cause Narrative
THE INFLIGHT STRUCTURAL FAILURE AND SEPARATION OF THE VERTICAL FIN WHICH LED TO A LOSS OF CONTROL AND MAST BUMPING. THE FAILURE OF THE FIN WAS DUE TO INADEQUATE CORROSION CONTROL EFFORTS BY THE OPERATOR.
Event Information
| Type of Event | Accident |
| Event Date | 4/23/1991 |
| Event Day of the Week | Tuesday |
| Time of Event | 745 |
| Event Time Zone | Central Daylight Time |
| Event City | SO. MARSH 275 |
| Event State | GULF OF MEXICO |
| Event Country | -- |
| Zipcode of the event site | 00000 |
| Event Date Year | 1991 |
| Event Date Month | 4 |
| 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 | Witness |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 2000 |
| Lowest Non-Ceiling Height | 500 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | 23 |
| Dew Point at event time (in degress fahrenheit) | 22 |
| Wind Direction (degrees magnetic) | 10 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 0 |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 687 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 44671 |
| Date of most recent change to record | Dec 12 2000 9:44AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N213AL |
| NTSB Number | FTW91FA070 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| 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 | 206B |
| Aircraft Series Identifier | 206B |
| Aircraft Serial Number | 1066 |
| Certified Max Gross Weight | 2822 |
| 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 | 5 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Mar 2 1991 12:00AM |
| Airframe hours since last inspection | 74 |
| Airframe Hours | 11375 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | |
| Aircraft Owner Street Address | |
| Aircraft Owner City | |
| Aircraft Owner State | |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | |
| Operator is an individual? | -- |
| Operator Name | OFFSHORE LOGISTICS, INC. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| 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 | External Load |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger/Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | NONE |
| Departure City | S. MARSH 261 |
| Departure State | GM |
| Departure Country | |
| Departure Time | 0 |
| Departure Time Zone | |
| Destination Same as Local Flt | -- |
| Destination Airport Code | NONE |
| Destination City | EWING BANKS 947 |
| Destination State | GM |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| 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 | -- |