Jingquan Sun

Definitions for ILS, Basic requirements, The ILS shall comprise the following basic components.The ILS shall be constructed and adjusted so that, at a specified distance from the threshold, similar instrumental indications in the aircraft represent similar displacements from the course line or ILS glide path as appropriate, irrespective of the particular ground installation in use.To ensure an adequate level of safety, the ILS shall be so designed and maintained that the probability of operation within the performance requirements specified is of a high value, consistent with the category of operational performance concerned.At those locations where two separate ILS facilities serve opposite ends of a single runway, an interlock shall ensure that only the localizer serving the approach direction in use shall radiate, except where the localizer in operational use is Facility Performance Category I-ILS and no operationally harmful interference results.VHF localizer and associated monitor.

Specification for ILS, Definitions,requirements, monitor

[1] Annex 10 to the Convention on International Civil Aviation,Aeronautical Telecommunications,Volume l Radio Navigation Aids,Sixth Edition July 2006. [2] Aviation radio navigation equipment test requirements,part 1: instrument landing systems(AC-115-TM-Jan 2013).

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