The letter details 14 options that the FAA have available to address noise concerns for planes leaving Sky Harbor International Airport.
The FAA recommends no changes from the current flight paths, citing savings in fuel, travel time, and emissions.
"We need immediate relief, um while these arguments or happening it is still happening over our houses," said Nicole Marquez.
The Phoenix City Council heard from former Congressman Ed Pastor, who was assigned to review the changes and the impact to the city.
"They said if we make the airline more efficient may enable to go higher, quicker turn, save gas, we can take in more plans and move them faster, that's our job, and so if we can do it in a safe manner, which they determined we could, then noise is a city problem," said Ed Pastor.
Pastor says the noise wasn't a concern to the FAA.
The special policy meeting was held to discuss potential action against the FAA and to hear from citizens.
On Wednesday, Phoenix Mayor Greg Stanton said that the city would move forward with preparations for a lawsuit.