The FAA is revising the applicability of certain collision avoidance system requirements for airplanes. The current rules are based on passenger seating configuration and therefore exclude all- cargo airplanes. This final rule will use airplane weight and performance characteristics as the basis for collision avoidance system requirements to capture cargo airplanes weighing more than 33,000 pounds (lbs.) maximum certificated takeoff weight (MCTOW). This final rule is intended to reduce the risk of a mid-air collision involving a cargo airplane, which will increase safety for cargo crewmembers, the public on the ground, and occupants of airplanes that already have collision avoidance systems.