Was there a flight simulator maintenance trade?
yep see above
L tech ST (synthetic trainer)
Went just as I joined up
So i was offered
L TECH TC (telecommunications)
which went (with L tech AF-Airfield and AD - Air Defence) and became
Eng Tech EL (Electronics)
which went and became
CIS TECH
which went and became
ICT Tech
All within 20 years!
I am not sure if that was normal for other trades? I am sure a chef has been a chef since 1914?