FIG ENR 1.5.28
Parallel ILS Approaches
Federal Aviation Administration Twentieth Edition
FIG ENR 1.5.29
Staggered ILS Approaches
18. Parallel ILS/MLS Approaches (Dependent) (See FIG ENR 1.5.29)
18.1 Parallel approaches are an ATC procedure permitting parallel ILS/MLS approaches to airports having parallel runways separated by at least 2,500 feet between centerlines. Integral parts of a total system are ILS/MLS, radar, communications, ATC procedures, and required airborne equipment.
18.2 A parallel (dependent) approach differs from a simultaneous (independent) approach in that, the minimum distance between parallel runway center-lines is reduced; there is no requirement for radar monitoring or advisories; and a staggered separation of aircraft on the adjacent localizer/azimuth course is required.
18.3 Aircraft are afforded a minimum of 1.5 miles radar separation diagonally between successive aircraft on the adjacent localizer/azimuth course when runway centerlines are at least 2,500 feet but no more than 4,300 feet apart. When runway centerlines are more than 4,300 feet but no more than 9,000 feet apart, a minimum of 2 miles diagonal radar separation is provided. Aircraft on the same localizer/azimuth course within 10 miles of the runway end are provided a minimum of 2.5 miles radar separation. In addition, a minimum of 1,000 feet vertical or a minimum of three miles radar separation is provided between aircraft during turn on to the parallel final approach course.
FIG ENR 1.5.30
Simultaneous Parallel ILS Approaches
(RUNWAY CENTERLINES SPACED 4300’ OR MORE [DUAL RUNWAYS]
OR 5000’ OR MORE, [TRIPLE OR QUADRUPLE RUNWAYS] - RADAR MONITORING REQUIRED)
18.4
Whenever parallel ILS/MLS approaches are in progress, pilots are informed that approaches to both runways are in use. In addition, the radar controller will have the interphone capability of communicating with the tower controller where separation responsi-bility has not been delegated to the tower.
19.
Simultaneous Parallel ILS/MLS
Approaches (Independent)
(See FIG ENR 1.5.30)
19.1 System. This approach system permits simul-taneous ILS/MLS approaches to parallel runways with centerlines separated by 4,300 to 9,000 feet, and equipped with final monitor controllers. Simulta-neous parallel ILS/MLS approaches require radar monitoring to ensure separation between aircraft on the adjacent parallel approach course. Aircraft position is tracked by final monitor controllers who will issue instructions to aircraft observed deviating from the assigned localizer course. Staggered radar separation procedures are not utilized. Integral parts of a total system are ILS/MLS, radar, communica-tions, ATC procedures, and required airborne equipment. The Approach Procedure Chart permit-ting simultaneous parallel ILS/MLS approaches will contain the note “simultaneous approaches autho-rized RWYS 14L and 14R,” identifying the appropriate runways as the case may be. When advised that simultaneous parallel ILS/MLS ap-proaches are in progress, pilots shall advise approach control immediately of malfunctioning or inoperative receivers, or if a simultaneous parallel ILS/MLS approach is not desired. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址:美国航行情报汇编 AERONAUTICAL INFORMATION PUBLICATION AIP 2(105)