ASN Wikibase Occurrence # 278582
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| Date: | Monday 30 August 2021 |
| Time: | 13:15 LT |
| Type: |  Robinson R44 II |
| Owner/operator: | Helicopter Air Alaska |
| Registration: | N878CB |
| MSN: | 10404 |
| Year of manufacture: | 2004 |
| Total airframe hrs: | 3570 hours |
| Engine model: | Lycoming IO-540-AE1A% |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Pelican, Alaska -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | External load operation |
| Departure airport: | Pelican, AK |
| Pelican, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that he was conducting helicopter external sling load operations to a remote mountain top. At the drop off site, while in a hover about 20 ft above the ground, with his attention focused outside to ensure he cleared terrain and obstacles, he felt the helicopter begin to settle. The rpm began to decay, the low rotor rpm light illuminated, and the horn sounded. He immediately lowered the collective, released the cargo and impacted the ground coming to rest on top of the cargo. The helicopter sustained substantial damage to the rotor system and vertical stabilizer.
The pilot reported that there were no preaccident mechanical malfunctions or anomalies with the helicopter that would have precluded normal operation, and that the accident may have been prevented if he had received additional training from the company to include flying at gross weight with and without external loads. In addition to having pilots check for available power in an out-of-ground effect hover with altitudes and escape routes before committing to the approach.
Probable Cause: The pilot's improper preflight planning to ensure adequate power to hover out-of-ground effect while conducting external load operations.
Accident investigation:
 |
|
Sources:
NTSB ANC21LA079
History of this aircraft
Other occurrences involving this aircraft
| 10 July 2020 | N878CB | Helicopter Air Alaska | 0 | Ketchikan, Alaska | |
sub |
| Ramp, ground handling | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Jun-2022 07:22 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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