North Arrivals via KATRN and Initial Noise DataMWAA Noise WG Dec 6, 2018

South of DCA SC

True KATRN 2.2 NM further South

Arrivals RWY 01 - Altitude True KATRN

• Percent of planes between 0 and 2000 ft:

KATRN Waypoint NA 3% of Total tracks = 57221 in 2014KATRN Waypoint NA 4% of Total tracks = 59115 in 2015KATRN Waypoint NA 4% of Total tracks = 61490 in 2016KATRN Waypoint NA 4% of Total tracks = 53131 in 2017

• Percent of planes between 0 and 2500 ft:

KATRN Waypoint NA 50% of Total tracks = 57221in 2014KATRN Waypoint NA 56% of Total tracks = 59115 in 2015KATRN Waypoint NA 57% of Total tracks = 61490 in 2016 KATRN Waypoint NA 54% of Total tracks = 53131in 2017

Arrivals Runway 1 - Altitude True KATRN2.7 – 3.5K

• Percent of planes between 2700 and 3500 ft:

KATRN Waypoint NA 42% of Total tracks = 57221 in 2014KATRN Waypoint NA 36% of Total tracks = 59115 in 2015KATRN Waypoint NA 35% of Total tracks = 61490 in 2016KATRN Waypoint NA 38% of Total tracks = 53131 in 2017

Noise Data

• Noise data from 2015 forward from:

• http://public-reports-us-standard.s3-website-us-east-1.amazonaws.com/MWAA/ReportingPortal.html

• Identify noise events associated with aircraft and from community.

• Airline, flight number and other info.

• Brief description of the noise data at:

• http://www.flyreagan.com/dca/dca-reagan-national-noise-event-data

All Noise Sources

Aircraft Noise only−Community Noise

Removed

All Noise Sources

Aircraft Noise only−Community Noise

Removed

Comparison MF and FH for Select Times

Remarks

• North Arrival Altitude FAA – no procedure changes for north arrival required

Altitude varies at KATRN

Accokeek, Fort Washington and Mount Vernon Arrival Noise Impact

FAA Ask – What can be done to provide relief for these communities?

• Noise Data valuable footprint showing noise levels

• Insufficient # noise monitors and poor location in VA and MD Does not provide good picture of noise impact

Do not put monitors near schools