ASN Wikibase Occurrence # 314613
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| Date: | Monday 26 July 2010 |
| Time: | 13:42 LT |
| Type: |  Bell 206 |
| Owner/operator: | Rotorcraft Leasing Co LLC |
| Registration: | N317RL |
| MSN: | 52317 |
| Year of manufacture: | 2005 |
| Total airframe hrs: | 5544 hours |
| Engine model: | Allison 250 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Gulf of Mexico, Louisiana -
 United States of America
|
| Phase: | Take off |
| Nature: | Unknown |
| Departure airport: | Gulf of Mexico, LA |
| Gulf of Mexico, LA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During takeoff from an offshore oil platform, the pilot reported a loss of main rotor rpm. The pilot activated the emergency float system and initiated an autorotation to the water. Upon touchdown, the engine was still operating. The pilot shut down the engine and prepared the passengers to evacuate. All three occupants safely evacuated the helicopter (which was upright on its skid-mounted float system) and boarded the emergency life raft that the pilot had inflated. The helicopter remained upright floating on the water and was later recovered and transported to the operator's on-shore maintenance facility. The operator did immediate fuel quality tests at the facility where the helicopter had most recently been refueled and found no problems.
An examination of the helicopter drive systems and a test run of the engine did not reveal any preincident anomalies that would have precluded normal operation of the main rotor system. The cause of the loss of main rotor rpm could not be determined.
Probable Cause: The loss of main rotor rpm during takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies.
Accident investigation:
 |
|
Sources:
NTSB CEN10IA438
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-Jun-2023 18:57 | ASN Update Bot | Added |
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