It's an "A++ modified".
It has the "A" airframe with the engines and drive train from a "C" (don't remember if they were called "modified 1S1" or "2S") and is, as far as i'm aware, unique.
It was maintained by Bristow at Redhill until the engineering facility closed (now Mann's at Fairoaks), but has always been crewed by pilots employed or contracted directly to the owner's company (although with a distinctly Bristow feel in the early days).
OH
Last edited by OvertHawk; 15th Oct 2013 at 09:17.
Reason: grammar