ARINC 718Ad1s5

Draft 1 of Supplement 5 to ARINC Specification 718A

Last Published: 
Monday, July 12, 2021

Draft 1 of Supplement 5 to ARINC Specification 718A: Mark 4 Air Traffic Control Transponder (ATCRBS/MODE S)

The Traffic Surveillance Working Group has reached consensus on the content of ARINC Specification 718A: Mark 4 Air Traffic Control Transponder (ATCRBS/MODE S). Supplement 5 expands ARINC Specification 718A by addressing the following items:

  • Pinout Updates for 718A-5 Transponders
    • Removal of Synchro Altitude Support
      • Needed for support of AIREP and Gross Weight 
    • New Inputs
      • 8 Program Pin Inputs (Strobed): Aircraft Type Character(AIREP)(Strobed)
      • 4 Program Pin Inputs (Strobed): Gross Weight
      • 2 Program Pin Inputs (Strobed): Transponder Antenna Longitudinal Offset
      • 3 Program Pin Inputs (Strobed): Wingspan
      • 1 Program Pin Input  (Strobed):  Transponder Antenna Lateral Offset
      • 1 Discrete Input: Gear Position
      • 5 ARINC 429 Input Buses: Various Inputs for DO-181F and DO-260C BDS registers
    • New/Repurposed/Existing Discrete Outputs
      • 3 New Strobe Discrete Outputs
      • 2 Re-proposed Discrete Outputs for additional strobe functionality
      • 1 Existing Strobe Output from ARINC 718A-4 (Total of 6 Discrete Output Strobes)
  • Updates for Mode-S and ADS-B Transponders
  • Maintains backwards compatibility with ARINC 718A-4 Transponders
Non-Member Price:
$127.00

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