concern
having just read this thread, well done guy's it seems that the correct, action will be taken, at last !
I can understand the "grass" concern, however, coming from a Police background, "grassing" is actively encouraged, should you witness, a "wrong doing " and do nothing, your deemed as guilty as the offender, and this is in, an environment, where lives are not normally at risk. Inform the CAA asap, before a life is risked.