2.5. Except take-off and landing, aerial work and state aircraft special task operations, VFR flights shall not be flown:
- over the congested areas of cities, towns or settlements or over an open-air assembly of persons at a height less than 1000 ft (300 m) above the highest obstacle within a radius of 600 m from the aircraft;
- elsewhere than as specified in 5 a), at a height less than 500 ft (150 m) above the ground or water; except flights with special clearances, balloon and hang glider flights