Heliski
the ENG MODE SEL, appears when the Auto start switch fails, this can happen either a faulty switch or when you went to start the selected ENG, youve passed and then back to IDLE or to slow to get to the IDLE position, what you did was correct too, MAN mode is there for these cases :-). elswhere you could of shut the HELI shut the BATT and restart again and fixed
, at the end the 139 still a computer but without CTRL+ALT+SUP .