Air Law and ATC Procedures
This domain carries a heavy question share of the Oman CAA PPL paper. It tests the Chicago Convention framework, the ICAO Annexes that Oman adopts through its Civil Aviation Regulations (OCARs), licensing and document requirements, and the rules of the air in Annex 2.
Framework and documents
- Convention on International Civil Aviation (Chicago, 1944): Article 12 rules of the air, Article 29 documents carried, Article 32 licences.
- Oman-registered aircraft carry the nationality mark A4O- followed by four letters. On board: certificate of registration, certificate of airworthiness, radio station licence, crew licences, and the mass and balance schedule.
- A PPL holder may not fly for remuneration and normally may not carry passengers unless recency is met: three take-offs and landings in the preceding 90 days and a valid biennial flight review.
Right of way (Annex 2)
- Converging: the aircraft on the right has right of way.
- Head-on: both turn right.
- Overtaking: the overtaking aircraft keeps clear, passing to the right.
- Landing aircraft have right of way over aircraft on the ground; the lower aircraft gives way, except when descending to land or on final approach.
- Heavier-than-air aircraft give way to balloons, gliders and airships.
Worked example
You plan a VFR cruise above 3,000 ft AGL on a magnetic track of 275 degrees. Tracks 180-359 take even thousands plus 500, so valid levels are FL 085, FL 105, FL 125. Choosing FL 105 satisfies the semi-circular rule; FL 090 would be a reciprocal-track level and a mark lost.
Traps
Take-off and landing are exempt from cruising-level rules; the semi-circular rule uses magnetic track, not heading; do not confuse transition altitude with transition level; free from cloud is required in controlled airspace, clear of cloud and in sight of the surface in Class G.