In 2023, the FAA activated initial Data Comm en route services at five more air traffic control centers and enabled the first increment of full en route services at 12 facilities, allowing pilots on some transcontinental routes to digitally accept certain clearances from terminal and en route control lers on their entire flight. In 2023, the FAA also increased the amount of Performance Based Navigation flight procedures and routes available, which can reduce travel distance and time, and increase flight path predict ability. Arrival procedures with an optimized profile descent were added for 11 airports, bringing the total number of airports with the procedures to 64. The FAA published 30 new and 24 amended T-Routes as part of the Alaska Aviation Safety Initiative and made 169 new Q-Routes available along the East Coast. Reduced airspace separation criteria allow for great er airspace throughput and can enable more expeditious flight paths. Six additional en route centers enabled the track-based display mode technol ogy to use Automatic Dependent Surveillance–Broadcast surveillance for