1. How many companies have actually serviced the UKCS platforms over the last 40 years?
CHC Scotia
Bristow/Bristow Helicopters
Bond
Bond Offshore
British International
British Airways Helicopters
North Scottish Helicopters
British Caledonian Helicopters
British Executive Air Services (BEAS)
Veritair trading as British International
2. CHC came to the market when it took over British International Helicopters and Bond Helicopters, but when did the purchase of these two companies take place and in what circumstances?
CHC didn't buy Bond as such, it bought Helicopters Services in Norway, which had previously bought Bond (amongst others, incluing Viking, Lloyds and Court)
Not sure of years at this moment.
3. And finally can someone tell me about the 'flare tip change' role, I have seen that some of the operators provide this service but I can't see what it involves, it sounds hazardous, but is it?
The flares have to have their 'tips' (sort of combustion plenums) changed periodically, as they wear /burn out (not the most benign environment to exist in!) In 1994 Bristow pioneered the technique (in the UK) of using a helicopter to sling and hoist the required equipment and componants for the tip change crew. Previously it had been done using pulleys and ropes, effectively (or, not effectively!)
The main challenge is the lack of suitable references when hovering 600 ft above the sea, but is not insurmountable for those with appropriate experience. CHC have a well known long line expert who tends to do their jobs, there is also a Norwegian outfit who do a lot of the jobs. Not sure what BHL do these days.
Short answers, and I'm sure many will add much more !
