Dave Incognito,
I would have to agree with Squawk 8888 (even that you cannot select 8 on a transponder)
Gravity reduces with the inversely square with the radius from the center of mass.
As the dist from earths core mass is less to the poles than at the equator the acceleration (gravity) is greater at the poles than at the equator.
The Luftwaffle suggestion of suction conceptually has merit, maybe its something similar to an aquaplaning phenomena. The ice changes state with movement of the aircraft on top giving a change the state of the ice to water or a thin layer of steam causing the earths atmospheric pressure from releasing the skies from the smooth layer of ice below.
Tcas climb thanks for the insight, Vmci…that’s a new one for me !. I don’t know, I just recall the C141 and C130 ops down south not requiring 50 km TORA.
Regards
Z