"Robert Moore" wrote in message
. 7...
Al B wrote

Vertical separation between airliners flying under instrument flight
rules (IFR) is normally 1,000'.

Above FL290 vertical sep is 2,000', at least until domestic RVSM is
implemented. But, just as a slight correction, it's not just between
airliners. It's between any traffic (air carrier/gen av/military).

Mish