Sir - The article concerning the state of the Greek air-traffic-control system (Flight International, 13-20 September, P9) accurately sums up the frustration shared by those who use Greek airspace.

You concentrate on the problems at Athens Airport, but there are problems throughout the system. For instance try obtaining an expeditious descent in the Macedonian sector through the current melee of radio telephone (R/T.)

Frustrating though the service can be, I believe, however, that the situation could be improved if the pilots from complaining nations were to exercise more basic R/T discipline than is now evident.

By speaking clearly, slowly and, above all, by listening before transmitting, we might all get our messages across.

PAUL INGOE

Woking, Surrey, UK

Source: Flight International