We are pleased to announce the availability of the following draft EUROCAE document prepared by EUROCAE WG-75 Traffic Alert and Collision Avoidance Systems (TCAS):
- ED-354: MOPS for ACAS Xr.
WG-75 is tasked to develop Airborne Collision Avoidance Systems (ACAS) X MOPS as a joint RTCA/EUROCAE activity. With ACAS X being developed in various variants, also the work of WG-75 will be organised following this specific structure. ACAS Xa will be the successor of TCAS II and the MOPS will also contain provisions for ACAS Xo designed for specific procedures such as close runway operations. ACAS Xu will provide requirements for a collision avoidance solution for unmanned aircraft. Finally, WG-75 will develop a MASPS defining requirements for the interoperability on collision avoidance systems of different designs.
Building on the technology in ACAS Xa, ACAS Xu and ACAS sXu, this MOPS will more manned rotorcraft to be equipped with collision avoidance systems. It aims at reducing the collision risk for rotorcraft in both controlled and uncontrolled airspace.
You are invited to review the proposed draft on the EUROCAE Workspace and complete the comment form. If you are a non-member of EUROCAE, please register here (and click on “Access only to Open Consultation”). Early replies are encouraged.
End Date: 04/05/2026.