Couple of years ago.
747-400 positioned from hangars for max wt dep.
During push, engineer requested return to blox as he suspected one tyre pressure low. No flight deck monitoring fitted.
After parking I could not visually confirm his diagnosis but he had the experience.
Tyre had damage sustained during positioning and was losing pressure.
Would have been flat by the time we taxied 4 k to runway.
Results of max wt take off with flat tyre?
May have felt something during take off but probably not enough to reject at low speed.
Probably shredded at high speed, possible eng failure,probable fuel dump and return.
None of the above happened because of the experience and vigilance of the engineer during the pushback.
Saved how much money???