Foreword

This Guidance Material provides guidance to CAR-173:

• (a) ANSD in the oversight of their service providers in the calculation and promulgation of operating minima;

• (b) Organizations responsible for instrument flight procedure (IFP) development to aid them in determination of AOM in a manner consistent with the provisions of CAR-OPS 1 and CAR-173;

• (c) Aerodrome operators and ANSP to understand how aerodrome operating minima are determined as well as to highlight the need for the provision of ground facilities and services when planning to implement all-weather operations; and

• (d) Flight crewmembers and other personnel who need to understand the AOM methods of calculation.

• The AOM are published on instrument approach charts. They constitute the lowest operating minima that can be used without an operational approval by the aircraft operator's surveillance authority.

• The aerodrome operating minima are published as MDH/DH and RVR/Visibility for the following approach procedures:

• • Category II precision approaches with DH greater than or equal to 100 ft;

  • Category I precision approaches with DH greater than or equal to 200 ft;

  • Approaches with vertical guidance (APV);

  • Non precision approaches; and

  • Visual manoeuvres.