Approach procedure suffixes (e.g., 'Z', 'Y') indicate multiple straight-in approaches of the same type to a single runway, primarily designed to accommodate more aircraft by offering different ...
French investigation authority BEA believes the prevalence of ILS approaches has obscured an underlying vulnerability of aircraft to the risk of terrain collision arising from incorrect altimeter ...
The FAA is systematically decommissioning older ground-based navigation systems like NDBs and VORs, and is now targeting Instrument Landing System (ILS) approaches for "rationalization" (reduction).