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0414 <br /> AC 150/5300-4B CHG15 <br /> 1/30/81 :• <br /> (1) Category A: Speed less than 91 knots. <br /> (2) Category B: Speed 91 knots or more but less than 121 knots. <br /> (3) Category C: Speed 121 knots or more but less than 141 knots. <br /> Category D: Speed 141 knots or more but less than 166 knots. <br /> (5) Cat lory E: Speed 166 knots or more. <br /> b. Aircraft Parking Line Limit. A line established by the airport <br /> authorities beyond which no part of a parked aircraft should <br /> protrude. 1 <br /> * <br /> • <br /> c. Airport Hazard. Any structure or object of natural growth located <br /> on or in the vicinity of a public airport, or any use of land near <br /> such airpot, that obstructs the- airspace required for the flight of <br /> aircraft i0 landing. Or taking off at the airport or is otherwise <br /> hazardous to aircraft landing or taking off at the airport. (See <br /> paragraph 16 for further discUssion.) <br /> • <br /> d. Airport La+out Plan. A scale drawing of the airport showing <br /> 4 <br /> existing and proposed airport facilities and obstructions to air <br /> navigation <br /> 1 <br /> * <br /> e. Airport Reference Point (.11.RP). A point having equal relationship to <br /> all existing and proposed landing and takeoff areas. (See <br /> appendix 7.) <br /> f. Approach Enid of Runway.. The near end of the runway as viewed from <br /> the cockpit of a landing aircraft. <br /> g. Clearway. An area beyond the runway not less than 500 feet (150 m) <br /> wide, centrally located about the extended centerline of the runway, <br /> and under theOontrol of the airport authorities. The clearway is <br /> expressed in terms of a clearway plane, extending from the end of <br /> the runway with an upward slope not exceeding 1.25 percent, above <br /> which no object nor any terrain protrudes. Threshold lights, <br /> however, may protrude above the plane if their height above the end <br /> of the runway is 26 inches (66 cm) or less and if they are located <br /> to each side of the runway. A clearway increases the allowable <br /> operating takeoff weights of turbine engine powered airplanes. For <br /> most airplanes, the maximum usable length of clearway is less than <br /> 1,000 feet (300 m) . <br /> h. Displaced Threshold. A threshold not located at the approach end of ' <br /> a runway. 1 <br />