ASN Wikibase Occurrence # 238274
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| Date: | Thursday 16 July 2020 |
| Time: | 15:14 LT |
| Type: |  Bell 206L-1 LongRanger II |
| Owner/operator: | Egli Air Haul Inc |
| Registration: | N1432D |
| MSN: | 45741 |
| Year of manufacture: | 1982 |
| Total airframe hrs: | 21432 hours |
| Engine model: | Rolls Royce Allison 250-C30P |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | RV Steadfast, off Augustine Island, AK -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Cargo |
| Departure airport: | Augustine Islan, AK (N/A) |
| Homer, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, during maneuvering for external load operations to a boat, the helicopter suddenly began to shake violently. He immediately realized the helicopter had struck the boat with the main rotor blades; he jettisoned the 50 ft longline, the skid-based emergency flotation system was activated, and the helicopter landed on the water without further incident.
A post-accident examination revealed that the helicopter had struck the boat's mast and sustained substantial damage to the two main rotor blades.
The pilot reported that there were no preaccident mechanical failures or malfunctions with the helicopter that would have precluded normal operation.
The pilot further added, he should have measured the boat mast height prior to operation instead of visually estimating the height and instead used a 100 ft long-line.
Probable Cause: The pilot's failure to see and avoid the boat's mast, which resulted in a main rotor blade strike. Contributing to the accident was the pilot's inadequate preflight planning by not having the boat's mast measured.
Accident investigation:
 |
|
Sources:
NTSB ANC20CA070
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N1432D
Location
Media:
Reflective observations from a pilot after an accident while conducting external load operations from a research vessel off the coast of Alaska. https://t.co/Gq32kDjSMZ #helicopter #heslo #accident #flightsafety #aviationsafety pic.twitter.com/1O1GJfiiA9
— Aerossurance (@Aerossurance) August 28, 2021
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 18-Jul-2020 19:59 | Captain Adam | Added |
| 08-Feb-2021 19:07 | harro | Updated [Nature, Source, Category] |
| 03-Mar-2021 21:10 | rudy | Updated [Category] |
| 07-May-2021 16:20 | rudy | Updated [[Category]] |
| 28-Aug-2021 11:39 | Aerossurance | Updated [Operator, Location, Narrative] |
| 28-Aug-2021 12:23 | Aerossurance | Updated [Source, Narrative] |
| 28-Aug-2021 12:28 | Aerossurance | Updated [Embed code] |
| 08-Jul-2022 05:33 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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