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時間:2011-04-18 01:03來源:藍天飛行翻譯 作者:航空
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3.
Complete turn to final at least 1/4 mile from the runway.


4.
Continue straight ahead until beyond departure end of runway.

5.
If remaining in the traffic pattern, commence turn to crosswind leg beyond the departure end of the runway within 300 feet of pattern altitude.

6.
If departing the traffic pattern, continue straight out, or exit with a 45 degree turn (to the left when in a left.hand traffic pattern; to the right when in a right.hand traffic pattern) beyond the departure end of the runway, after reaching pattern altitude.

 

FIG ENR 1.1.3
Traffic Pattern Operations
Parallel Runways


EXAMPLE. KEY TO TRAFFIC PATTERN OPERATIONS
1.
Enter pattern in level flight, abeam the midpoint of the runway, at pattern altitude. (1,000’ AGL is recommended pattern altitude unless established otherwise.)

2.
Maintain pattern altitude until abeam approach end of the landing runway on downwind leg.

3.
Complete turn to final at least 1/4 mile from the runway.

4.
Continue straight ahead until beyond departure end of runway.


5.
If remaining in the traffic pattern, commence turn to crosswind leg beyond the departure end of the runway within 300 feet of pattern altitude.

6.
If departing the traffic pattern, continue straight out, or exit with a 45 degree turn (to the left when in a left.hand traffic pattern; to the right when in a right.hand traffic pattern) beyond the departure end of the runway, after reaching pattern altitude.

7.
Do not overshoot final or continue on a track which will penetrate the final approach of the parallel runway.

8.
Do not continue on a track which will penetrate the departure path of the parallel runway.

 

Federal Aviation Administration Twentieth Edition
5. Visual Indicators at Airports Without an Operating Control Tower
5.1 At those airports without an operating control tower, a segmented circle visual indicator system, if installed, is designed to provide traffic pattern information. The segmented circle system consists of the following components:
5.1.1 The Segmented Circle. Located in a position affording maximum visibility to pilots in the air and on the ground and providing a centralized location for other elements of the system.
5.1.2 The Wind Direction Indicator. A wind cone, wind sock, or wind tee installed near the operational runway to indicate wind direction. The large end of the wind cone/wind sock points into the wind as does the large end (cross bar) of the wind tee. In lieu of a tetrahedron and where a wind sock or wind cone is collocated with a wind tee, the wind tee may be manually aligned with the runway in use to indicate landing direction. These signaling devices may be located in the center of the segmented circle and may be lighted for night use. Pilots are cautioned against using a tetrahedron to indicate wind direction.
5.1.3 The Landing Direction Indicator. A tetrahe-dron is installed when conditions at the airport warrant its use. It may be used to indicate the direction of landings and takeoffs. A tetrahedron may be located at the center of a segmented circle and may be lighted for night operations. The small end of the tetrahedron points in the direction of landing. Pilots are cautioned against using a tetrahedron for any purpose other than as an indicator of landing direction. Further, pilots should use extreme caution when making runway selection by use of a tetrahedron in very light or calm wind conditions as the tetrahedron may not be aligned with the designated calm.wind runway. At airports with control towers, the tetrahedron should only be referenced when the control tower is not in operation. Tower instructions supersede tetrahedron indica-tions.
5.1.4 Landing Strip Indicators. Installed in pairs as shown in the segmented circle diagram, and used to show the alignment of landing strips.
5.1.5 Traffic Pattern Indicators. Arranged in pairs in conjunction with landing strip indicators and used to indicate the direction of turns when there is a variation from the normal left traffic pattern. If there is no segmented circle installed at the airport, traffic pattern indicators may be installed on or near the end of the runway.
5.2 Preparatory to landing at an airport without a control tower, or when the control tower is not in operation, the pilot should concern himself with the indicator for the approach end of the runway to be used. When approaching for landing, all turns must be made to the left unless a traffic pattern indicator indicates that turns should be made to the right. If the pilot will mentally enlarge the indicator for the runway to be used, the base and final approach legs of the traffic pattern to be flown immediately become apparent. Similar treatment of the indicator at the departure end of the runway will clearly indicate the direction of turn after takeoff.
 
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