Stuck Air Start valves, see them on a Nimrod as well same remidy using a hide faced hammer.
We were waiting to go home on said aircraft. One engine would not start, sooty jumps out armed with heavy object, hammers packed up (well wiggles out of the hole) of overwing escape hatch walks down wing, drops off end. Drops access door hits ASV engine bursts into life. Access door closed. Sooty climbs back on wing using power set as steps. We all fly home. I have seen it done with an athletic sooty using the escape rope with all 4 running.
Has anybody mentioned the ACPU yet. Good for an extra stay somewhere nice. Not good if it is at Goose Bay in winter and you do not have any winter kit.