Hi spannersatcx,
Tried it and failed, Shift leader not always where he should be, often out on the line due manpower shortage( wont go into that one) Office not continually manned.
Correct me if I'm wrong here but someone told me you need a radio licence to transmit through aircraft radio....not that its ever stopped anyone !! Another instance, No power to aircraft, remote stand etc. Aircraft pushed back....towing team notice FOD in wheel, avionic on departure, need A/C for opinion, Pushback team dont have headset to talk to Flt Deck. The list is endless.