When I used to visit Chivenor RMB I would drop in and see the 22SAR guys fairly regularly. They we're operating Sea Kings. The concensus of opinion there was that it cost roughly £3.00 per second to keep one in the air.Yes but it would be interesting to know the actual figure although I suspect it would be difficult to actually get it together, as they are all volunteers you would also have to pull in data from every workplace they left.