You guys are off the mark. 'Instructing' the aircraft concerned was a desperate measure to avoid a collision so 'instructing' to avoid a collision is the best course of action at the time.
Bloggs, the GA aircraft made the first broadcast at 11,000' at 10nm probably while the jet joined xwind, flaps were running and operational talk existed. The ATSB said that both aircraft made all the required calls, however the radio call to conduct a straight in approach by XGA actually happened at the end of the exchange with other traffic at 7nm and with no other call after that.
A jet is configuring in the circuit at that time getting set up for landing, not twiddling thumbs listening for conflicting traffic (that's not expected). The mental traffic model has already been created earlier. If the jet guys are configuring, setting flap, operational conversation and miss a call that has not been expected earlier, then you can assume problems. In a high workload environment, the first to go is your hearing, just providing balance to your comment.
Last edited by Utradar; 18th Jan 2017 at 09:48.