ASN Wikibase Occurrence # 144807
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| Date: | Tuesday 3 April 2012 |
| Time: | 15:55 |
| Type: |  Enstrom 280FX Shark |
| Owner/operator: | Travland Helicopters Intl Inc |
| Registration: | N3042D |
| MSN: | 2128 |
| Total airframe hrs: | 1350 hours |
| Engine model: | Lycoming HIO-360-F1AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Corpus Christi (KCRP), TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | Edinburg, TX (EBG) |
| Corpus Christi, TX (CRP) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
After an uneventful flight, the pilot slowed the helicopter into a stable hover about 15 feet above the landing point. Although the engine continued to operate, the main rotor rpm suddenly decayed and the helicopter landed hard. The pilot, who had over 5,600 flight hours in helicopters, stated that there was no warning before the loss of main rotor drive. The helicopter was in a position whereby power to the rotor system was essential to conducting a safe landing. Examination of the helicopter revealed that the bolt that retains the clutch drive rod end in the clutch pivot fork had sheared, resulting in the clutch disengaging. Once the clutch disengaged, there was no drive to the rotor system, and the helicopter's descent could not be arrested. With the exception of the failed bolt, examination of the entire drive system did not show any preexisting mechanical malfunction or abnormalities that would have precluded normal operation. The helicopter had operated about 1,350 hours since it was new, and the retaining bolt was the original installation. The reason for the failure of the bolt could not be determined.
Probable Cause: The failure of the bolt that retained the clutch drive rod end, which resulted in a loss of main rotor drive and a subsequent hard landing.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Apr-2012 14:00 | Geno | Added |
| 06-Apr-2012 16:05 | RobertMB | Updated [Time, Location, Damage, Narrative] |
| 30-Apr-2013 14:50 | TB | Updated [Operator, Location, Destination airport, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 20:35 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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