Immediately after a ???07 was instructed to descend and maintain 6000'. The pilot replied with callsign only - no readback of level...
Is this normal practice in the States? It sounds unsafe to me. The ATCO never picked the pilots up on it either??
Buffalo approach control uses 2 different frequencies. In this case the one controller is working both sectors and transmitting on both frequencies. The radio is scanning both Buffalo approach frequencies (as well as Tower). There appears to be a delay function of 1 to 2 seconds either programmed or built into the scanner, so it will stop scanning momentarily after each transmission. If the controller transmits and the scanner happens to stop on the frequency that the aircraft is not on (50/50 chance) then the beginning of the aircraft's transmission will be missed because of the scanning delay. This appears to be evident with transmission heard from other aircraft on the tape as well. It is quite likely that the altitude readback was transmitted but just not picked up in the recording.
JC