Sea-Tac Stakeholder Advisory Round Table (StART)
Aviation Noise Working Group
DRAFT NEAR-TERM AVIATION NOISE ACTION AGENDA SUMMARY
as of 12-13-19
Near-term Action  Late Night Noise Limitation      Runway Use Plan          Glide Slope Analysis       Ground Noise Analysis
Item                Program                 Agreement
Description     Voluntary measures to       Revise the current          Raising Runway             Analyze airfield ground
reduce late night (12:00      Runway Use Plan to         34R's glideslope            noise sources including
AM to 5:00 AM) noise       minimize use of the 3rd    to lessen aircraft           researching opportunities
through incentivizing air      Runway during the late      approach noise              to minimize the impacts
carriers to fly at less noise    night hours (12:00 AM to                                   of reverse thrust noise
sensitive hours or            5:00 AM)
transition to quieter
aircraft
Components    Reestablish conversations  Updated language for:     Consider various                  TBD
with air carriers on              3rd Runway              strategies and timelines
scheduling flights outside       daytime/evening        for raising Runway 34R's
of the late-night hours          runway usage           glideslope
3rd Runway late night
Recognizing there are          runway usage           Once strategy for 34R is
reasons why many air         North flow             determined, consider
carriers fly during the late       Preferential Use         options for raising the
night hours, establish a          during nighttime        glide slope on all runways
noise threshold that            hours                   to higher than 3 degrees
would identify the louder      Monthly monitoring
aircraft flying during the         of compliance in
late night hours                 partnership with FAA
to incentivize the

transition to quieter
aircraft
Late night noise threshold
observance would be
tracked as part of the
Port's already established
Fly Quiet Program and
publicized on a
more regular basis along
with the results of the
other Fly Quiet Programs'
aircraft noise-related
categories
Potential Changes  Reduction of aircraft noise   Minimized Use of the 3rd   Reduction of aircraft          Reduction of aviation
during the late night hours   Runway during the late      noise for communities                 noise
night hours                 south of Sea-Tac
Key Responsible   Port of Seattle, air Carriers  Port of Seattle and FAA      Port of Seattle, FAA, and             TBD
Parties        and cargo operators                                              air carriers
Notes