P.Marlin
well I can only truly answer your question from my point of veiw, and that comes from someone who is sitting in the pointy end of the aircraft.. breaking it not fixing it..
so the answer is NO.. you cannot expect to commute.. many of the jet jocks are trying ... but rosters do not accomidate one who commutes.. as for travel.. well. when your OFF .. your OFF.. the time is yours.. you do need an Exit Permit to leave the country.. but for us Jet Jocks.. we can apply and buy Multi-Exit permits valid for 1 year.. come and go as we please as many times as we like..
not sure about a Ground Wrench though.. I do know Cabin crew have to apply for every exit permit.. although there is not problem with granting them.. just takes time.. couple of days to process..
hope this helps
CK