TWOTBAGS
If and I use the word "IF" carefully AsA were every able to get it right in some of the ports around this place and introduce 160 to 4 like in a lot of other places then then many of the issues we seem to have here would be negated.
Check out this safety bulletin issued by ASA as
these speeds apply for ATC separation and sequencing purposes.
http://http://www.airservicesaustral...eeds-final.pdf
Standard Terminal Area Arrival Speeds (STAAS) were introduced to improve safety and efficiency by bringing more predictability to arrival sequences at Brisbane, Sydney, Melbourne and Perth airports. Although the implementation of STAAS has been successful, reports indicate that not all flights are complying, resulting in additional air traffic control (ATC) workload, aircraft go-arounds, and losses of separation or separation assurance.
and
Pilots not complying with STAAS has resulted in unnecessary traffic sequencing actions, aircraft go-arounds and reduced safety margins.
Obviously, unnecessary traffic sequencing actions, aircraft being sent around or going around and a reduction in safety margins are to be avoided.
Consistent expectation and consistent application will improve safety and ultimately efficiency.