ASN Wikibase Occurrence # 278943
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| Date: | Tuesday 28 May 2019 |
| Time: | 17:10 LT |
| Type: |  Sikorsky UH-19D Chickasaw |
| Owner/operator: | |
| Registration: | N955TC |
| MSN: | 551260 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Brewster, Washington -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Brewster, WA |
| Brewster, WA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot-in-command (PIC) was evaluating another pilot as a new job applicant. While the applicant-pilot was manipulating the helicopter controls, the PIC heard a 'bang†and noted an overspeed indication on the tachometer. He subsequently took control of the helicopter and performed an autorotation that resulted in a hard landing, which substantially damaged the helicopter. The Federal Aviation Administration and operator surmised that the main drive line system clutch and torque converter failed, which resulted in the engine overspeed. However, the operator did not respond to investigators or submit a NTSB Form 6120.1, Pilot/Operator Aircraft Accident Incident Report, nor was a follow-up examination of the helicopter able to be scheduled and performed by the NTSB investigator. Due to the operator's lack of cooperation during the investigation, the NTSB investigator was unable to definitively determine the cause of the accident.
Probable Cause: A reported mechanical malfunction and a hard landing for reasons that could not be determined based on available evidence.
Accident investigation:
 |
|
Sources:
NTSB WPR19LA168
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Jun-2022 13:08 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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