"Frank Minich" wrote in message
...
Sorry to jump in late.

I always understood the AOA units were somehow calibrated but arbitrary,
so the 139 KIAS was the nominal speed that corresponded to on-speed AOA
with full flaps and 50,000 pounds max-trap weight.

Units should be either a percentage of the lift coefficient curve for the
wing or a percentage of the AOA vane as determined by the OBC depending on
the type if I remember....but I'm getting old :-)).

Dudley Henriques