Aircraft with the affected Drive Shafts, which include 225, and some L2's and even 332's are subject to varying levels of scrutiny.
332's can fly for 6 hours between HUMS checks
L2's 4.5Hours
225's Just 3 hours between checks
So effectively after every flight. But even if allowed 6 hours flying, why wouldn't you do it after every flight???
In addition, the CAA have just effectively banned flights on these aircraft types (fitted with the suspect part) from flying over a Hostile Environment.
Lets hope for the benefit of the whole North Sea industry that we sort this issue out quickly, safely and permanently