Deviations request #111 ETSO‐C112d#2 Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) Airborne Equipment

Deviates from ED‐73E by replying to Mode A/C/S All‐Call and Mode S‐only All‐Call interrogations and by transmitting on top or bottom antenna when TCS is set to 1 or 2, for transponder limited to installation where ground status is wired.

Comments are invited on these Deviations and should be sent by mail or electronic mail (preferred means), before 2nd December 2014, to: