Part of this has already been quoted in this thread, but I understand the letter is in the public domain, so needs repeating:
UNCLASSIFIED
The current CASA policy on the Cessna SIDs is thus;
The SIDs represent important approved manufacture's data.
The requirement for the incorporation, or otherwise, of the Cessna SIDs in Class B aircraft, is determined by the maintenance schedule elected by the Registered Operator / owner.
CAR 42A Manufacturer’s Maintenance Schedule option – would require compulsory incorporation of Cessna SIDs where available, and it would be difficult to argue for SIDs not to be incorporated on CAR 42C Approved System of Maintenance where available.
Many Registered Operators choose to use CAR 42B CASA Maintenance Schedule (Schedule 5).
I can confirm that there is nothing in CAR 42B that specifically mandates compliance with, or incorporation of, a Cessna SID. Note that CAR 42B dates back to 1988, prior to Cessna developing SIDs programs for their fleets – which were also 25 years younger at that time.
However, CAR 42V requires persons undertaking maintenance (including inspections) to do so in accordance with applicable maintenance data. CAR 2A(2)(c) defines such data to include instructions issued by manufacturers of aircraft, components and materials.
In CASA’s view, SIDs are manufacturer’s instructions which, for the purposes of maintaining continuing airworthiness of an aircraft, must be considered by the Registered Operator / owner, and if applicable to their aircraft, complied with regardless of the schedule under which the aircraft is maintained.
Registered Operator’s would need to have a convincing argument as to why they did not consider the incorporation of SIDs to be necessary on their aircraft.
Hope this is of assistance to you.
Regards,
John Retzki | Civil Aviation Safety Authority
Certificate Management Team Leader - CMT 3