Extensive Revisions Coming to IFR

Aviation International News » February 2003
January 11, 2008, 4:50 AM

The FAA is proposing numerous revisions to IFR flying to reflect the technological advances intended to “facilitate the transition from ground-based navigation to new reference sources,” principally GPS. For example, the middle marker would be dropped as a required component of the ILS. Also, the FAA proposes to add the term “decision altitude (DA)” and change the definition of HAT from “height above touchdown” to “height above threshold.” Many of the changes would also make the FARs compatible with International Civil Aviation Organization terminology and definitions.

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