 Along with its revolutionary variable-sweep wings, the F-111 was equipped with terrain-following radar and an escape module that jettisoned the entire cockpit in an emergency, rather than individual ejection seats.Its top speed was Mach 2.5 and its combat radius allowed it to reach targets in Indonesia from bases in northern Australia.Upon delivery in 1973 it was fitted with analogue avionics and could only drop unguided ("dumb") bombs.