Fluffy, true but in this type of case, gnd crew to failed aircrew, the person is too young to have built up a wealth of trade experience to automatically switch to Eng O. They would need at OASC to have the quals for aircrew or eng.
One of my nav studes was a chopped pilot, chopped NAv, but with his BEng was accepted as an Eng O, last I heard he was a sqn ldr.