The stuff about not making a PAN call is bureaucratic mis-direction. The controller knew it was an emergency.
OldAcro,
Sadly, in compliance land, compliance is everything, including pedantic compliance with "standard radio procedures". Initiative, enterprise and common sense is actively discouraged. It might lead to creating a liability, you know.
Cast your mind back to the last major loss of life at YSSY --- a Kingair that crashed on the seawall around the 34 (now 34L) threshold -- everybody died.
Despite the engine failure advised, the controller did not clear the aircraft No.1 because the pilot did not broadcast a Mayday or otherwise formally declare an emergency. It's all in the BASI report. Had he not been cleared No2 behind a B727, in all likelihood the aircraft would have made it.
Go even further back to the night the TAA B727 on takeoff hit the taxing CPA DC-8. Once again, pedantic and slavish Australian (and non-ICAO) "radio procedures" played a big part in the accident.
Or the Garuda DC-10 ( I think it was a 10) that nearly hit a domestic over Perth --- once again, failed "radio procedures" ---- but if the poor bleeding controller doesn't deviate --- he or she doesn't loose their jobs.
It's a long sad history of Australian "radio procedures" versus effective communications.
Tootle pip!!