"adding a notch of flap"
Am I right in saying most US 747 operators use Flaps 10 as standard, whereas most Europeans use 20? (For t/o)?
My experience observing with a Euro based carrier (Loadmaster for 20+ years on various 74s) is 20, occasionally 10 at hot/high airports.
And talking of flaps, may I ask an opinion of something I have seen. Flaps forgotten, TOGA, Idiot Alarm, T/L's closed, brakes, flaps selected, TOGA again & go (without vacating rwy) . Empty 747F on a 7 hour flight on a long rwy.... To those that know me, no it wasn't them. N- reg company that no longer exists.