FINAL REPORT - Stakeholders - Ofcom

interconnections, plugs, pin layouts, etc) of the required Mode S transponder avionics.
This does not yet include the required functionality for the extended squitter.
There is some overlap between several of the above standards. The most recent
standard and the main reference are the RTCA 1090 MHz MOPS. It is intended that other
standards will be adjusted to reflect this one.
Simulation Results
In terms of ADS-B performance, the most influential simulations were conducted by
TLAT. These simulations used both VOLPE and SIEM models.
The results tend to indicate that:
• 1090 ES has a limited capacity to support FIS-B;
• 1090 ES does not support long range air-air applications (> 90 nm);
• 1090 ES will support short range air-air applications (