MOST OF THE TIME DISCRETION WOULD NOT BE NEEDED IF A SMALL MONORITY SPENT LESS TIME FAFFING AROUND AND MOANING TO FLEET MANAGERS/CREW CONTROL/OPS/HANDLING/CLEANERS/REFUELLERS/ENGINEERS/UNIONS AND ANYONE ELSE THAT CARED TO LISTEN AND NOT TAKING 1HR 10MINS TO TURN AN AIRCRAFT AROUND THAT ONLY REQUIRED 30.....