Sorry;
CREST = crew restructure
APC = army pilots course
ACM(O) (G) = aircrewman (observer)/(gunner) front seat, second pilots, of rank lance corporal or above (non-comissioned)
I have accepted the Blackhawk requires 2 up front.
Oscillations, spool vave seizure, loss of eng oil press, battery overheat, cockpit fire, yes, but afraid no runaway up. (contain with collective)
ACM(O/G) was a seperate trade and formally taught to fly the aircraft and operate the systems, including SS11 and TOW etc.
Trade in the back is Air doorgunner, who is private rank upwards(non- comissioned). Pax handling his job, as is guns, USLs groundcrew and pilots with assistance from doorgunner. Most USL tasks carried out in British Army do not have rear crew to assist, as is mostly the case for pax sorties.
The lowest rank for Army Pilot IS Cpl and is happy to be there because he is P2 with promotion/captaincy ahead.
The aircrewman up front would be a fully qualified "first officer", albeit an NCO with the title aircrewman.