Take off roll
As a frequent flyer I'm used to the initiation of the take off roll which usually starts with a reduced thrust and then take off thrust after a few seconds once moving. Is this to reduce engine wear or to save fuel ? On the same subject, I was observing this from the airport hotel beer garden (man) a couple of weeks ago whilst waiting for a colleague's flight and it was intersting to note the PIA 747 take off. He must of held the brakes on for a good 5 seconds with the engines roaring away! Are these guy's really that short of runway or is it just the way they do it. I've seen these things flying low on more than one occasion and I live 20 miles away from the airport.