August 30, 2019 | International, Aerospace
USAF To Equip KC-135s For ADS-B Position Reporting
by Bill Carey The U.S. Air Force will install automatic dependent surveillance-broadcast (ADS-B) position reporting capability on its fleet of 417 Boeing KC-135 Stratotankers beginning in September. ADS-B Out is not part of the KC-135's current Block 45 avionics upgrade, but the functionality will be added to the four-engine refueling tanker, the service confirmed. Supplier Collins Aerospace said it will integrate ADS-B Out through its Flight2 avionics system for the KC-135, using the aircraft's Identification friend or foe (IFF) transponder to broadcast position. Work is expected to take place at the Oklahoma City Air Logistics Complex at Tinker AFB, Oklahoma. “We're very close to having the certification complete for that, and then the Air Force will begin the certification process to install on the aircraft,” Marc Ayala, Collins Aerospace director of Air Force sales and business development, told Aerospace DAILY. “Our system will interface with the various components—the GPS position source and some of the aircraft state data that gets fed into the [IFF transponder], basically the ‘electronic handshake' for that box to work properly within the system,” Ayala said. The Air Force has said that 2,936 military aircraft across all U.S. services will be fitted to signal their position by ADS-B Out as of the FAA's Jan. 1 compliance date. The number represents about one-fifth of the 13,596 aircraft operated by the Defense Department, according to Aviation Week's Military Fleet Discovery Tool. The leading category of ADS-B-equipped aircraft will be helicopters (1,129), followed by air mobility and transport aircraft (923), command and control/intelligence surveillance and reconnaissance aircraft (259) and trainers (625), the Air Force said. The 923 mobility and transport aircraft that will be equipped by January as part of ongoing updates include the C-5 Galaxy, C-17 Globemaster III, C-130J Super Hercules, KC-10 Extender and C-21 transport, the service said. https://aviationweek.com/defense/usaf-equip-kc-135s-ads-b-position-reporting