Rules of Air

What is the proper order of priority?

• AGliders do not give way to balloons
• BPower-driver heavier-than-air aircraft shall give way to airships, gliders and balloons
• CGliders shall give way to airships and balloons

What is the lowest allowable flight altitude over towns, settlements, and populated areas?

• AThe altitude which permits the aircraft to land safely in the event of an engine failure
• B1000 ft above the highest obstacle within 600 m of the aircraft position
• C500 ft

A controlled flight must notify the relevant ATC unit if the average True Air Speed at cruising altitude differs or is anticipated to differ from the flight plan by plus or minus:

• A5%
• BMach 0.02
• C10%