ASN Wikibase Occurrence # 361116
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| Date: | Friday 29 October 1993 |
| Time: | 17:35 LT |
| Type: |  Bell 206L-3 |
| Owner/operator: | Chevron U.s.a., Inc. |
| Registration: | N5370V |
| MSN: | 51254 |
| Year of manufacture: | 1988 |
| Total airframe hrs: | 4857 hours |
| Engine model: | Allison 250-C30P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Gulf Of Mexico, -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Unknown |
| Departure airport: | , GM |
| Venice, LA (8LA5) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
DUE TO THE HIGH WIND, THE HELICOPTER WAS TIED DOWN ON THE OIL RIG'S HELIDECK WITH FOUR ROPES. DURING PREPARATIONS FOR TAKEOFF, THE LEFT FRONT TIE DOWN ROPE WAS INADVERTENTLY LEFT FASTENED BECAUSE OF THE HIGH WIND CONDITIONS AND TIME CONSTRAINTS. THE PILOT LIFTED THE HELICOPTER OFF THE DECK AND MADE A LEFT TURN INTO THE WIND. HE FELT A SLIGHT TUG, BUT THOUGHT IT WAS DUE TO THE TURBULENCE. AT A HEIGHT OF ABOUT TWO OR THREE FEET, THE NOSE PITCHED ABRUPTLY DOWN AND THE PILOT FELT 'TWO QUICK MAST BUMPS.' HIS CORRECTIVE CONTROL INPUT AND THE HELICOPTER'S ATTITUDE CAUSED THE MAIN ROTOR BLADES TO CONTACT THE TAILBOOM, SEVERING THE 90 DEGREE GEAR BOX. THE HELICOPTER THEN SPUN 180 DEGREES TO THE RIGHT AND IMPACTED THE HELIDECK ON ITS LEFT SIDE. THE PILOT INDICATED THAT HE WAS INFLUENCED BY THE 'PRESSURES OF WEATHER AND MISSION COMPLETION.'
Probable Cause: THE PILOT IN COMMAND'S INADEQUATE PREFLIGHT INSPECTION IN THAT HE FAILED TO REMOVE A TIE DOWN ROPE. A FACTOR WAS THE PILOT'S SELF-INDUCED PRESSURE.
Accident investigation:
 |
|
Sources:
NTSB FTW94LA022
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 14:59 | ASN Update Bot | Added |
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