In AIP/Jepp, the terms "must", "should" and "recommend/ed" are mostly used.
For example:
* High performance aircraft are recommended to fly a circuit height of 1500 AGL (ATC AU-715),
* Aircraft should not be operated in the circuit at an IAS of more than 200kts (ATC AU-714), and,
* A departing IFR aircraft must establish on the outbound track within 5NM of the aerodrome (ATC AU-715).
The use of language in the legislation, IMHO is one of the things that is very correct.
Once aware of the function of language ( must=must, should=suggestion/good idea etc etc) within the various publications, I believe the information is more easily understood and far less daunting.
Last edited by Josh Cox; 25th Aug 2010 at 22:43.
Reason: More goodera spelling.