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Features October 2016 Issue

Not Quite an ILS

Not Quite an ILS

You never know when you’ll encounter a rare LDA approach, even one with vertical guidance. Each has its own design, so brief accordingly.

Among these procedures you’ll find a surprising variety of features. But here are the common threads: The LDA is made up of a localizer transmitting a course signal with the expected beam width of three to six degrees, but it will be offset by as much as 30 degrees, even when advertised with a specific runway.

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