Is this not the norm for low-cost or charter ops? Whilst employed as an LAE - I've got 767 B2; maybe I'll approach Globespan! - I worked mainly for the maintenance arms of UK charter airlines. Keeping costs to the minimum was the norm (I'm not condoning the practices mentioned above). I remember one company would carry an engineer on board from the UK to Kenya, expect him to deal with the turnaround and then fly back with it. Didn't last for long - someone raised a CHIRP.