
Collins Aerospace [UTX] has awarded L2 Aviation a subcontract for installations of Mode 5 Automatic Dependent Surveillance-Broadcast (ADS-B) upgrades for the U.S. Air Force's fleet of 58 Boeing [BA] KC-10 Extender tanker aircraft, the Texas-based avionics engineering and modifications company said on Nov. 12. Mode 5 is an enhancement to legacy Mode 4 Identification, Friend or Foe (IFF), which has been in use since the mid-1950s for military identification. The National Security Agency and Joint Chiefs of Staff require Mode…