Thanks PPRUNE Radar!
I'm still not sure if 819 Sqn are still at Prestwick or not. As that link goes straight to the same website that has no details of 819 Sqn; I know they were definately there in 2000, as I had an Observer mate there.
Can it be true? There is no Fish-head SAR cover in Scotland anymore?
STOP-PRESS:
(Just uncovered this nugget on the 'History' section of HMS Gannet
Farewell to 819 Naval Air Squadron
1 November 2001 saw the decommissioning of 819NAS at HMS Gannet. 819NAS had been in residence for 30 years and performed anti-submarine duties in defence of the Clyde. Also involved in extended world wide deployments, many local exercises, weapon testing and submarine Commander training they had their major impact on the Scottish community through the Search and Rescue. They assisted with the Piper Alpha disaster on 6 July 1988, were the first helicopters on scene in the aftermath of Lockerbie bombing on 20 December 1988, assisted in the search for the Solway Harvester off the Isle of Man and were first on scene at the Airtours crash near Glasgow airport.
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Hooray for 202 Sqn!