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Posted on: September 10, 2020

Latest Airport Community Roundtable Update

At the request of the Federal Aviation Administration (FAA), Charlotte Douglas International Airport (CLT) convened the Airport Community Roundtable (ACR) in 2017. This broad-based community initiative provides input into airport-related noise impacts and finds, where possible, practical solutions and recommendations for the FAA to consider when determining aircraft operating procedures at CLT.   

Recently, the Town’s appointee to the ACR provided this update on their work over the last two-plus years:

CLT ACR Accomplishments through July 2020

  • Created a common understanding among ACR members, Airlines, FAA, and CLT regarding effect on aircraft altitudes and noise of changes resulting from Metroplex.
  • Identified need for technical guidance and facilitation support in developing/analyzing recommendations in a collaborative and productive manner; worked with CLT to acquire resources.
  • Provided Formal Support for FAA Reauthorization Bill
  • Airport sent letters to government officials on behalf of the ACR to support sections of FAA Reauthorization Bill that address noise issues, particularly phase out of Stage 3 aircraft (25% of CLT fleet). FAA agreed that they will comply with noise abatement measures listed in the Act.
  • Developed Strategic Framework for identifying noise improvement opportunities by creating the Noise Improvement Matrix.
  • Conducted Benchmarking Study with 10 other Airports to identify potential noise improvement approaches related to 15 different criteria.  Incorporated key points into the Noise Improvement Matrix.
  • Developed an FAA Decisioning Flow to illustrate the process the FAA will utilize to analyze and implement recommendations that are part of the Submittal Package.
  • Developed Resident-based Evaluation Criteria for Noise Annoyance
  • Since the ACR did not consider the FAA’s 65 DNL to be a true measure of annoyance and health effects from noise, ACR members created noise effect metric considerations based on frequency and noise level – noted in Comfort/Concern/No Go categories for use in evaluating recommendations.
  • Created 2,400 square mile Expanded Grid for analysis of all recommendations on the broader community, whether or not areas were currently affected by airplane noise.
  • Published multiple articles by ACR participants in local periodicals to build awareness/education of the current noise effects of airplanes and offer avenues for the public to take to address concerns.
  • Sent a formal request to all carriers to be a part of a Voluntary Restraint Program, with the goal of a reduction in scheduling flights at night.
  • Sent a formal request to the FAA to return the CAATT Waypoint (on the CHSLY3 arrival pattern for arrivals to the 36 parallels) to Pre-Metroplex locations.
  • FAA analyzed the request and provided an alternative to create the same positive noise effect by Raising the Altitudes on the Downwind Leg on the CAATT and EPAYE Waypoints by 1000’.
  • ACR later decided to include this request in with the formal Slate of Recommendations to be submitted to the FAA.
  • Sent a formal request to all Airlines to modify their use of Departure Profiles and adopt NADP-2 as the desired Profile for any aircraft with that technical capability.  American Airlines noted that they will comply with this request.
  • Evaluated/Assessed 10 Recommendations for possible inclusion in a Slate of Recommendations to be submitted to the FAA. 
  • Submitted 6 Recommendations to FAA to address Departures and Arrivals with the Overall Goal to reduce the airplane noise effect on the population.  More specifically, the ACR wants to increase aircraft dispersion on departures and to reduce noise from aircraft arrivals.  Recommendations submitted include:
  • Remove the 2-mile Restriction on Departures
  • Utilize Multiple Divergent Departure Headings
  • On South Departures, change heading at first turns off 18L (East) and 18C (West)
  • Maintain 6,000’ Arrival Altitude until Final Approach Course
  • Return CAATT Waypoint to Pre-Metroplex location (aka, Raising the Altitude by 1000’ at CAATT/EPAYE)
  • Utilize CDA (Continuous Descent Approach)
  • Received FAA Tower Orders and North v. South Flow Decisioning Criteria from FAA to identify more local noise improvement opportunities in the future.

Click to view recommendations sent to the FAA. These are being reviewed now.  

More info about the Airport Community Roundtable can be found at: https://www.cltairport.com/community/noise/airport-community-roundtable/.

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