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extension to the center-line of the landing area bisecting this rectangle.

 

7. Under this Law, the term “approach surface” means an area abutting on the shorter side of a strip and, as specified in Ordinances of the Ministry of Transport, sloping upwards at a gradient of more than 1/50th from the horizontal of plane, the projection of which corresponds to the approach area.

 

8. Under this Law, the term “horizontal surface” means that section of the horizontal plane including a point 45 meters vertically above the aerodrome reference point, which is surrounded by a circle drawn with that point at its center and with a radius of a length of not more than 4,000 meters as specified in Ordinances of the Ministry of Transport.

 

9. Under this Law the term “transitional surface” means an area including the slopes of the approach surfaces and the longer sides of the strip at a gradient of 1/7th, (in the case of a heliport, at a gradient of not more than 1/4th as specified by Ordinances of the Ministry of Transport) from the horizontal plane to the intersection with the vertical surface, including the center-line of the strip and including the areas as defined above, as are enclosed by the lines which intersect the area, including the slopes of the approach surfaces and the areas including the longer sides of the strip abutting such slopes.

 

10. Under this Law, the term “aeronautical light” means any light used by an air navigation facility to aid the navigation of aircraft, as specified by Ordinances of the Ministry of Transport.

 

11. Under this Law the term “air traffic control area” means any air space, 200 meters or more above the land or water, and designated in the notification by the Minister of Transport regarding the safety of air traffic.

 

12. Under this Law the term “air traffic control zone” means any air space above any aerodrome and its vicinity which the Minister of Transport may designate in the notification regarding the safety of air traffic.

 

13. Under this Law, the term “instrument meteorological condition”means bad weather conditions with a range of vision which may be specified by Ordinances of the Ministry of Transport taking the visibility and cloud conditions into consideration.

 

14. Under this Law, the term “instrument flight” means a flight which is performed relying solely on flight instruments to measure the response altitude, position and course of the aircraft.

 

 

 

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