Jonty
I am only talking about A320. With nil winds at max landing weight of 66Tons VLS is 141plus 5KTS for ATHR the Vapp is 146 and the GS should be same. If you add anything for HD wind component it increases airspeed but will reduce ground speed. Let's say HD wind componenet is 20KTS so you add 7kts to VLS. It becomes 148 but groun speed will become 128 kts.Can you explain such high ground speed without tail wind? The landing distance for good to medium breaking action and low ABrake is increased by 140 mtrs. That's not awful lot.
Last edited by vilas; 11th June 2013 at 12:01.