ASN Wikibase Occurrence # 145275
Last updated: 30 April 2017
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Narrative:The helicopter, a Robinson R22 Beta, N121MR, struck the tail rotor on landing, about 5 miles west of Palmer, Alaska.
Robinson R22 Beta
|Owner/operator:||Castor Aviation Ltd|
|C/n / msn:|| 0496|
|Fatalities:||Fatalities: 0 / Occupants: 1|
|Airplane damage:|| Substantial|
|Location:||5 miles west of Palmer, Alaska -
United States of America
|Departure airport:||Palmer, Alaska|
|Destination airport:||5 miles west of Palmer, Alaska|
|Investigating agency: ||National Transport Safety Bureau (NTSB) - United States of America |
The pilot flew to a practice area and landed the helicopter on what the pilot thought was firm snow. As he landed, the helicopter suddenly broke through the surface and its tail rotor struck the snow. The pilot re-positioned the helicopter and the tail rotor gearbox chip detector light illuminated. An examination showed that the tail-rotor driveshaft had sheared.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows: The pilot's selection of unsuitable terrain for landing, which resulted in a tail rotor strike.
1. NTSB Identification: ANC12CA032 at http://www.ntsb.gov/_layouts/ntsb.aviation/brief2.aspx?ev_id=20120422X33539&ntsbno=ANC12CA032&akey=1
2. FAA: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=121MR
||Updated [Cn, Operator, Phase, Source, Damage, Narrative]|
||Updated [Time, Aircraft type, Location, Source, Narrative]|
||Updated [Operator, Location, Departure airport, Destination airport, Source, Narrative]|
||ASN Update Bot
||Updated [Time, Damage, Category, Investigating agency]|