时间：2011-10-20 00:49来源：蓝天飞行翻译 作者：航空 点击：次
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STRAIGHT-IN LANDING / APPROACH. A landing made on a runway aligned within 30 degrees of the final approach course following completion of an instrument approach. TACTICAL AIR NAVIGATION (TACAN). An ultra-high frequency electronic air navigation system, which provides suitably-equipped aircraft a continuous indication of bearing and distance to the TACAN station. TAKEOFF DISTANCE AVAILABLE (TODA). See declared distances. TAKEOFF RUN AVAILABLE (TORA). See declared distances. TAXILANE. The portion of the aircraft parking area used for access between taxiways and aircraft parking positions. TAXIWAY. A defined path established for the taxiing of aircraft from one part of an airport to another. TAXIWAY SAFETY AREA (TSA). A defined surface alongside the taxiway prepared or suitable for reducing the risk of damage to an airplane unintentionally departing the taxiway. TETRAHEDRON. A device used as a landing indicator. The small end of the tetrahedron points in the direction of landing. THRESHOLD. The beginning of that portion of the runway available for landing. In some instances the landing threshold may be displaced. TOUCH-AND-GO. An operation by an aircraft that lands and departs on a runway without stopping or exiting the runway. A touch-and-go is recorded as two operations: one operation for the landing and one operation for the takeoff. TOUCHDOWN ZONE (TDZ). The first 3,000 feet of the runway beginning at the threshold. TOUCHDOWN ZONE ELEVATION (TDZE). The highest elevation in the touchdown zone. TOUCHDOWN ZONE (TDZ) LIGHTING. Two rows of transverse light bars located symmetrically about the runway centerline normally at 100-foot intervals. The basic system extends 3,000 feet along the runway. TRAFFIC PATTERN. The traffic flow that is prescribed for an aircraft landing or taking off from an airport. The components of a typical traffic pattern are the upwind leg, crosswind leg, downwind leg, and final approach. |
