Aircraft noise complaints are valid in some places, but remedies should be technical and proportional. The FAA's Part 150 program provides a structured process to map noise exposure, evaluate mitigation (preferential runway use, voluntary abatement routes, limited curfews tied to federal authority), and secure federal matching funds for sound‑insulation projects. Local ordinances that attempt to regulate flight paths or altitudes are frequently preempted by federal law; pursuing collaborative Part 150 processes yields durable mitigation without endangering essential services.
The City of Longmont has a Voluntary Noise Abatement Procedure (VNAP), including pilot-recommended climb profiles, to reduce noise over residential areas. City of Longmont , City of Longmont

• FAA — Part 150 Airport Noise Compatibility Planning:

https://www.ecfr.gov/current/title-14/chapter-I/subchapter-I/part-150

• FAA — Airport Noise guidance and Part 150 resources:

https://www.faa.gov/airports/environmental/airport_noise