Originally Posted by
acl65pilot
Quick question for you ASA guys. Why have you gone to ASQ (Acee) 4XXX as a call sign. I noticed that today when you guys were taking off in front of me. Are you getting ready to start flying for someone else?
It was not that way when I was there.
"ASA will use four digit flight numbers in order to comply with ICAO ATC international and domestic flight rules"
Taken from the Informational bulletin.