ASN Wikibase Occurrence # 177621
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| Date: | Saturday 15 May 2004 |
| Time: | 16:22 |
| Type: |  Cooke Rotorway Exec |
| Owner/operator: | Private |
| Registration: | N319RC |
| MSN: | 3195 |
| Total airframe hrs: | 150 hours |
| Engine model: | Rotorway R-152 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Willis, TX -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Willis, TX |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The 3,200-hour pilot reported that as he lifted the helicopter up to a hover from a boat dock, he started to move the helicopter over the water. Subsequently, the pilot heard a ratcheting sound followed by a partial loss of engine power. The right landing skid and the main rotor blades contacted the dock, and the helicopter came to rest upright in about 4-feet of water, adjacent to the dock. Examination of the engine revealed that the #1 cylinder exhaust valve keeper retaining clip has disengaged. The pilot stated that he had recently sent the #1 cylinder out for maintenance and reinstalled the cylinder approximately 10 hours prior to the flight.
Probable Cause: The partial loss of engine power due to the failure of the #1 cylinder valve retainer clip. A contributing factor was the lack of suitable terrain for the forced landing.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20040525X00665&key=1
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Jul-2015 13:30 | Noro | Added |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 07-Dec-2017 18:01 | ASN Update Bot | Updated [Other fatalities, Departure airport, Source, Narrative] |
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