ASN Wikibase Occurrence # 32239
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| Date: | Saturday 26 August 1995 |
| Time: | 09:45 LT |
| Type: |  Sikorsky CH-54A (S-64A) |
| Owner/operator: | Rick Leishman |
| Registration: | N64AR |
| MSN: | 68-18454 |
| Year of manufacture: | 1968 |
| Total airframe hrs: | 3980 hours |
| Engine model: | P&W T73-P-1 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Emigrant Gap, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While flying upslope with an external load of logs at almost zero airspeed, the pilot (PIC) heard an 'explosion' and noted that the helicopter pitched nose-up and rolled right. He turned to initiate a downslope forced landing, while experiencing control feedback and stiffness. As the crew began an approach, the copilot attempted to jettison the load with the electrical release; however, neither crew member verified the results of the procedure. As the aircraft continued to descend on the approach, the cargo hook struck the ground, opened, and released the logs. At the termination of the approach, the helicopter's main rotor blade struck several trees. After the helicopter touched down, it rolled onto its left side in a shallow stream. The No. 2 engine exhibited evidence indicating that it was producing power at impact; however, the No. 1 engine exhibited evidence indicating that it was not rotating. During subsequent inspections, no preimpact anomaly was found with either of the engines or of associated systems.
Probable Cause: a compressor stall in the right engine for an unknown reason, which resulted in a loss of power in that engine; and inadequate crew coordination between the pilot and copilot, which resulted in their failure to ensure that the external load was promptly jettisoned or released.
Accident investigation:
 |
|
Sources:
NTSB LAX95LA305
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 24-Dec-2009 11:55 | TB | Updated [Aircraft type, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Phase, Destination airport, Source, Damage, Narrative] |
| 26-Dec-2009 07:33 | TB | Updated [Aircraft type] |
| 19-Mar-2011 05:57 | TB | Updated [Time, Operator, Nature, Source, Narrative] |
| 19-Mar-2011 06:00 | TB | Updated [Source, Narrative] |
| 09-Apr-2024 12:36 | ASN Update Bot | Updated [Time, Cn, Operator, Other fatalities, Nature, Source, Narrative, Category, Accident report] |
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