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Sikorsky S-61 CN 61476 was built in 1970.
Registered as G-AYOY
On 2/22/1971 it was bought by British European Helicopters which later became British Airways Helicopters.
12 month lease to British Caledonian Helicopters in 1984
Operated by CHC since 2000
From 2002 - 2007 she was flying for British International Helicopters, operating in the Falklands.
Her last airworthiness certificate expired April 2008, and CAA records show it had 34,737 hours on the airframe at the end of 2005
There are reports of her developing a crack in the transmission in 2007 and has been grounded and stored in Plymouth since.
Recent reports show her to have been sold to Vector Aerospace and shipped to Canada in 2011 for rebuild for SAR operation in Afghanistan.
Interesting stuff...found with help from Google, Yahoo and Bing.