ASN Wikibase Occurrence # 291422
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| Date: | Friday 29 April 2016 |
| Time: | 07:15 LT |
| Type: |  Bell 47G 5 |
| Owner/operator: | Wilbur-ellis Co |
| Registration: | N6288N |
| MSN: | 7888 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 7013 hours |
| Engine model: | Lycoming VO-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Ardo, California -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | San Ardo, CA |
| San Ardo, CA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While performing an agricultural flight, the pilot of the helicopter heard a loud noise followed by a vibration in the flight controls, and the helicopter began to roll. He noted that the cyclic was stiffer than normal, and his control inputs produced a delayed response from the helicopter. The pilot was able to return the helicopter to level flight and attempted a run-on landing; however, the helicopter began a roll to the left, which he was not able to correct before the main rotor blades impacted the ground and the helicopter rolled onto its side, resulting in substantial damage.
Postaccident examination revealed that the pin for the outboard end torque tube, which controlled lateral movement of the swashplate, was fractured.
Probable Cause: The failure of the pin in the outboard end of the lateral flight control torque tube.
Accident investigation:
 |
|
Sources:
NTSB WPR16LA099
History of this aircraft
Other occurrences involving this aircraft
| 28 June 1987 | N6288N | Soilserv, Inc. | 0 | Salinas, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Oct-2022 13:43 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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