初のGPSベース進入
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1993
year
The FAA approved the first GPS-based instrument approach procedure in 1993, beginning the satellite navigation revolution in aviation.
解説
GPS approaches allow aircraft to navigate precisely to runways without ground-based navigation aids like ILS or VOR. This was particularly transformative for small airports that could not justify the cost of installing instrument landing systems. Today, GPS-based approaches outnumber traditional approaches at US airports, and WAAS-enhanced GPS provides near-ILS precision.