Chapter 1: Introduction

Section 1.1: General

1.1.1 Authority for this Part and CASA’s Commitment to ICAO

1.1.1.1 The Civil Aviation Safety Regulations Part 173 – Instrument Flight Procedure Design establishes the standards pertaining to the design of Instrument Flight Procedures.

1.1.1.2 For the design of:

(a) Instrument Flight Procedures, other than the design of Required Navigation Performance Authorization Required Approach (RNP AR APCH) procedures, the design standards are contained in:

(i) International Civil Aviation Organization (ICAO) Publication Doc 8168-OPS/611, Volumes I and II, also referred to as the Procedures for Air Navigation Services – Aircraft Operations (PANS‑OPS); and

(ii) this Manual of Standards (MOS) which comprises:

(A) additional design standards not included in PANS-OPS; and

(B) differences which are adopted by Australia; and

(C) new or developing standards; and

(b) RNP AR APCH procedures, the design standards are contained in:

(i) PANS OPS; and

(ii) this MOS which comprise:

(A) additional design standards not included in PANS-OPS; and

(B) differences which are adopted by Australia; and

(C) new or developing standards; and

(iii) ICAO Publication Doc 9905-AN/471, also referred to as the Required Navigation Performance Authorization Required Procedure Design Manual (ICAO Doc 9905).

1.1.2 Differences between ICAO documents and standards in the MOS

1.1.2.1 Notwithstanding the above, where there is a difference between a standard prescribed in ICAO documents and the MOS, the MOS standard shall prevail.

1.1.3 Document Set

1.1.3.1 The document hierarchy consists of:

(a) relevant Civil Aviation Safety Regulations (CASRs);

(b) the Manual of Standards (MOS); and

(c) Advisory Circulars (ACs).

1.1.3.2 The regulatory documents establish, for service providers, a comprehensive description of system requirements and the means of meeting them.

1.1.3.3 CASRs establish the regulatory framework (Regulations) within which all service providers must operate.

1.1.3.4 The MOS comprises specifications (Standards) prescribed by CASA, of uniform application, determined to be necessary for the safety of air navigation. In those parts of the MOS where it is necessary to establish the context of standards to assist in their comprehension, the sense of parent regulations has been reiterated.

1.1.3.5 Readers should understand that in the circumstance of any perceived disparity of meaning between MOS and CASRs, primacy of intent rests with the regulations.