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
Item
Program
Description
Voluntary measures to
reduce late night (12:00
AM to 5:00 AM) noise
through incentivizing air
carriers to fly at less noise
sensitive hours or
transition to quieter
aircraft
Components
Reestablish conversations
with air carriers on
scheduling flights outside
of the late-night hours
Recognizing there are
reasons why many air
carriers fly during the late
night hours, establish a
noise threshold that
would identify the louder
aircraft flying during the
late night hours
to incentivize the

Runway Use Plan
Agreement
Revise the current
Runway Use Plan to
minimize use of the 3rd
Runway during the late
night hours (12:00 AM to
5:00 AM)
Updated language for:
 3rd Runway
daytime/evening
runway usage
 3rd Runway late night
runway usage
 North flow
Preferential Use
during nighttime
hours
 Monthly monitoring
of compliance in
partnership with FAA

Glide Slope Analysis
Raising Runway
34R's glideslope
to lessen aircraft
approach noise

Consider various
strategies and timelines
for raising Runway 34R's
glideslope
Once strategy for 34R is
determined, consider
options for raising the
glide slope on all runways
to higher than 3 degrees

Ground Noise Analysis
Analyze airfield ground
noise sources including
researching opportunities
to minimize the impacts
of reverse thrust noise

TBD

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
during the late night hours
Key Responsible
Parties
Notes

Minimized Use of the 3rd
Runway during the late
night hours

Port of Seattle, air Carriers Port of Seattle and FAA
and cargo operators

Reduction of aircraft
noise for communities
south of Sea-Tac
Port of Seattle, FAA, and
air carriers

Reduction of aviation
noise
TBD