Breakdown of co-ordination involving a Boeing 767-238ER, VH-EAK, 2315 km North of Perth, WA on 29 July 1993

The aircraft's crew requested a climb to a higher cruising altitude. The Flight Service Officer passed on the request to the responsible Air Traffic Control (ATC) Officer. The correct phraseology and verification procedures were not used between the two, and the aircraft was issued with a climb clearance before the ATC officer had determined that such a clearance was appropriate. The ATC officer subsequently issued a correct clearance and no conflictions resulted.