ASN Wikibase Occurrence # 369742
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| Date: | Thursday 29 September 1988 |
| Time: | 12:40 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Petroleum Helicopter Inc. |
| Registration: | N2246Q |
| MSN: | 45752 |
| Year of manufacture: | 1982 |
| Total airframe hrs: | 3282 hours |
| Engine model: | Allison 250 C-28 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Santa Barbara, CA -
 United States of America
|
| Phase: | Approach |
| Nature: | Unknown |
| Departure airport: | Platform Hondo, CA |
| Santa Barbara, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT REPORTED THE ENGINE FAILED AT 25-30 FEET AGL DURING FINAL APCH. THE PLT INITIATED AN AUTOROTATION TO THE ASPHALT SURFACE OF THE HELICOPTER PARKING RAMP. STEEL PLATES WERE PLACED ON THE PARKING SPOTS TO PREVENT RAMP EROSION. THE LEFT FRONT SKID TUBE COLLIDED WITH ONE OF THE STEEL PLATES, FRACTURING THE FRONT CROSS TUBE. THE NOSE OF THE HELICOPTER PITCHED DOWN AND THE MAIN ROTOR DISC FLEXED, SEVERING THE TAIL BOOM AFT OF THE HORIZONTAL STABILIZER. EXAM OF THE ENGINE REVEALED THE NO. 1 TURBINE WHEEL FAILED AS A RESULT OF PREVIOUS CYCLES OF HIGH TEMP (2300 DEG F).
Probable Cause: FAILURE OF THE #1 TURBINE WHEEL. CONTRIBUTING TO THIS ACCIDENT WAS THE UNREPORTED OVER TEMPERATURE CYCLES OF THE ENGINE. ALSO CONTRIBUTING WAS THE UNSUITABILITY OF THE LANDING SURFACE FROM THE PRESENCE OF THE 1/4 INCH STEEL SHEETING.
Accident investigation:
 |
|
Sources:
NTSB LAX88FA330
History of this aircraft
Other occurrences involving this aircraft
| 3 January 1985 | N2246Q | Petroleum Helicopters, Inc. | 0 | Santa Barbara, CA | |
sub |
| 21 August 1997 | N2246Q | Helica Del Peru | 3 | Arica, |  |
w/o |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Mar-2024 17:51 | ASN Update Bot | Added |
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