Automatic Dependent Surveillance–Broadcast (ADS–B) is an advanced surveillance technology that combines an aircraft’s positioning source, aircraft avionics, and a ground infrastructure to create an accurate surveillance interface between aircraft and ATC. ADS–B is a performance–based surveillance technology that is more precise than radar and consists of two different services: ADS–B Out and ADS–B In.
ADS-B Out works by broadcasting information about an aircraft's GPS location, altitude, ground speed and other data to ground stations and other aircraft, once per second. ADS-B Out airspace and equipment requirements are contained in 14 CFR § 91.225 and the equipment performance requirements are contained in §91.227. ADS-B In provides operators of properly equipped aircraft with weather and traffic position information delivered directly to the cockpit.
Here you can find links to ADS-B regulations and guidance, as well as detailed information on the airspace and equipment requirements and capabilities.
|§ 91.225||Automatic Dependent Surveillance-Broadcast (ADS-B) Out Equipment and Use|
|§ 91.227||Automatic Dependent Surveillance-Broadcast (ADS-B) Out Equipment Performance Requirements|
|90-114B||Automatic Dependent Surveillance-Broadcast Operations|
Note: The FAA does not require an authorization to conduct ADS-B Out operations in the airspace specified in § 91.225 (U.S. airspace). Additionally, there is no authorization required to use ADS-B In for basic traffic situational awareness. However, an authorization is required to conduct the more advanced operations using ADS-B In, such as CDTI Assisted Visual Separation (CAVS), and In-Trail Procedure. You will find information and links to guidance material here.
OpSpec A354 – To conduct ADS-B In-Trail Procedure, the Operator must request and be issued OpSpec A354.
OpSpec A355 – To conduct CDTI Assisted Visual Separation (CAVS) using ADS-B IN, the Operator must request and be issued OpSpec A355. To expedite the process, the A355 Operator Application Checklist (CAVS) should be used.
|Order 8900.1, Vol.3, Ch.18, § 3 (A354)||OpSpec/MSpec/LOA A354–Automatic Dependent Surveillance-Broadcast (ADS-B) In-Trail Procedure (ITP)|
|Order 8900.1, Vol.3, Ch.18, § 3 (A355)||OpSpec/MSpec/LOA A355–Automatic Dependent Surveillance-Broadcast (ADS-B) In Operations|
|A355||CDTI Assisted Visual Separation (CAVS) Using ADS-B In (PDF)|
For more information, please visit NextGen Equip ADS-B.