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■ UDOS Application - Enables reduced in-trail spacing ▪ Initial spacing effectively reduced from typically 3.0 NM to 2.2 NM ■ Spacing Decompression - Within 10 NM: ▪ Over 95 percent of departure spacing decompresses to currently required minimum separation or more ▪ Increased need for ATC mitigation limited to less than 5 percent of departure operations ■ Need for ATC Mitigation - More frequent need...
The initial spacing applied between departing aircraft is a major factor affecting the safety and efficiency of departure operations at an airport. When departure operations are conducted under Instrument Flight Rules (IFR), successive in-trail departures must be provided a minimum of 3 nautical miles (NM) Radar Separation unless visual separation is applied. However, if the departure paths diverge...
▪ Background — Performance Based Navigation (PBN) ▪ Cornerstone of the FAA's Next Generation Air Transportation System (NextGen) ▪ Improvements in navigation precision pave the way for re-evaluating current standards — E.g., terminal divergence standard (15 degrees) ▪ In 2010, MITRE developed the Equivalent Lateral Spacing Operation (ELSO) standard concept — ELSO enables reduced-divergence departure...
Performance-Based Navigation (PBN) represents a cornerstone of the Federal Aviation Administration's (FAA) Next Generation Air Transportation System (NextGen). Improvements in aircraft navigation precision associated with PBN operations pave the way for the development of advanced spacing concepts that evolve currently applicable separation standards and improve operational efficiencies. The Equivalent...
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