To ARK & 442.
An interesting but disturbing thread - could other civil cases not be used to assist ?
If civilian SAR aircrewmen are not deemed to be flightcrew, then they must be either aircrew or cabin crew, otherwise there is no point in taking off, because without them it is impossible to attempt a mission. Therefore they are part of the crew and are covered by the appropriate legislation (Operations manual, ANO, AOC etc) and insurance, even though they are unlicenced.
Without quoting the details, two accidents involving Civil SAR crews were investigated by the UK AAIB, and ALL AIRCREW (licenced & unlicenced) had all the usual post accident checks - medical, recency, currency, competence etc. etc.
I would suggest that "passengers" would not be subjected to the same line of investigation - therefore, it would seem that the case has already been made covering "crew" of any description.
Hope that this may assist.
To PP. don't touch that mouse or keyboard.
SARcastic