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Federal Aviation Administration Categorical Exclusion Declaration: Greener Skies Over Seattle, Seattle TRACON

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The FAA issued a Categorical Exclusion Declaration allowing limited testing of new Required Navigation Performance (RNP) arrival procedures at Seattle-Tacoma International Airport, under the Greener Skies Over Seattle initiative. The test procedures, including optimized flight paths and descent profiles, were designed to reduce aircraft noise, fuel burn, and emissions while improving safety and efficiency. The exclusion, signed in February 2012, determined that the test phase would not require further environmental review, as it was a short-term evaluation to collect operational and noise data.

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FAA Categorical Exclusion (CATEX) Declaration for the Greener Skies Over Seattle initiative at Seattle TRACON (KSEA), covering proposed implementation of Required Navigation Performance (RNP), Area Navigational Visual Flight Procedures (RVFP), and Standard Terminal Arrival Route (STAR) approach procedures at Seattle-Tacoma International Airport. Action determined categorically excluded under FAA Order 1050.1E paragraphs 311n and 311o. Signed 2/17/12–2/21/12 by Jamie Erdt (Air Traffic Manager ZSE), Kevin Lanier (Air Traffic Manager S46 Seattle TRACON), Augustin Moses P.E. (Environmental Specialist AJO2-W2), Steve Osterdahl (Director EnRoute and Oceanic Operations AJE-W), and Ron Fincher (Acting Director Western Terminal Operations AJT-W). Procedures conducted on test basis to collect flight data, validate optimized profile descents (OPD), reduce fuel burn, noise, and emissions at KSEA/KBFI.

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