Let me get this straight in my mind....you're going to follow a B747 in a 172,
I seem to remember that wake turbulence is proportional to the generating airplane's weight.
You would need to be about 10nm astern wouldn't you, I would... at least!
I didn't really have a choice, he was passing over me as the controller was speaking. Should have been 2-2500ft between us if he was on slope. Never felt a thing, strangely
Got to agree the controllers at AA were pretty good to us
(I've never beat up the tower either...... and if I had, they never would have encouraged it
)