Hi Souza
With regard to hours worked by the technical staff in the Don,don't forget that no mechanism exists to pay them overtime as no such concept exists in the PDF.Techs do recieve duty money for after-hours work but it is peanuts compared to actual overtime.There are early or late "shifts" for some techs, but that is essentially a local arrangement and not necessarily DF policy.There is no formal structure for night maintenance, so it goes on, but on an ad-hoc basis, i.e, the GIV might get a wheel-change done by the duty crew, rather than wait for the "day" people to show up. Also, there has always been reluctance at personnel level to carry out a shift-style arrangement without the appropriate pay and conditions being in place beforehand.It wasn't unknown for people to work up huge amounts of lieu days and then be refused them, after the work is done...the RAF, by comparison, have had shifts at it's deep maintenance centres for years.Perhaps the DoD should look to the UK for guidance.
regards
GttC