No aircraft shall fly over any congested area of a city, town or settlement below

A) An altitude allowing for continuation of flight or an emergency landing without undue hazard to persons or property on the surface. b) An altitude of 1,000ft (300m) above the highest obstacle within a horizontal radius of six hundred meters of the aircraft where the aircraft is operated over any congested area of a city, town or settlement or over any open-air assembly of persons; c) An altitude of five hundred feet above the surface where an aircraft is operated over un-congested areas, except over open water or sparsely populated areas where the aircraft shall not be operated closer than one hundred and fifty meters to any person, vessel, vehicle or structure.