Foreword

(a) This Guidance Material has been issued by the Public Authority for Civil Aviation of Oman (hereinafter referred to as PACA or “the AUTHORITY”) under the provisions of the Civil Aviation Law of the Sultanate of Oman.

(b) In addition to providing general guidance on the implementation of specific CAR 172 elements, acceptable means of compliance are also addressed when warranted.

(c) For CAR 172 elements that are not covered by this Guidance Material, the intent is that there is sufficient detail in the original CAR element itself that precludes any further explanation.

(d) Requests for additional explanation, clarification, or questions can be sent to the Air Navigation Safety Department (ANSD) of the PACA DGCAR.

(e) As amendments are made to the original CAR, this Guidance Material shall be reviewed to ensure continued applicability.

(f) The editing practices used in this document are as follows:

• (1) ‘Shall’ and ‘Must’ are used to indicate a mandatory requirement and may appear in this Guidance Material.

• (2) ‘Should’ is used to indicate a recommendation.

• (3) ‘May’ is used to indicate discretion by the AUTHORITY, or the industry as appropriate.