Thinking about it again (and after coming up empty after a Google for "AnSCHIEBEgeschwindigkeit", it might be AnSCHWEBEgeschwindigkeit, i.e. "gliding-in speed". That, even me lousy computer pilot can make sense of. ;)
"Landestrecke bei voll angestellter Landeklappe, Fluggewicht von 4300kg und...
Excuse me while I mingle. ;)
The correct spelling would be "Fluggewicht" and "Anschiebegeschwindigkeit".
Fluggewicht is flight weight.
Anschiebegeschwindigkeit, that's a bit trickier as I am not an aviator. "Geschwindigkeit" is speed, of course. "Anschieben" is used as a term e.g. when...