September 17, 2019
ED-256 Ch. 1 "MOPS for ACAS Xa with ACAS Xo functionality Change 1"

We are pleased to announce the publication of ED-256 Ch. 1 “MOPS for ACAS Xa with ACAS Xo functionality Change 1.”
Change 1 to ED-256 contains changes to requirements and tests that were are required to correct issues found during first implementations. During the first Open Consultation additional comments were raised against ED-256. These comments led to additional change proposals which on request of EASA and FAA shall be included in Change 1. The respective information was added to the Change 1 document in chapters 1.16 to 1.20. These chapters are the main focus of the second Open Consultation.

Available on the EUROCAE website.

Related News

NEWSblog April 2026

Catch up on all the latest updates from EUROCAE in our monthly newsletter, your go-to source for insights into our ...

New Publication: ED-254A "Arrival Sequence Service Performance Standard"

We are pleased to announce the publication of ED-254A “Arrival Sequence Service Performance Standard”. EUROCAE has produced a number of ...

Michael Holzbauer (Frequentis) Elected New President of EUROCAE

Michael Holzbauer, Director European Affairs ATM at Frequentis, has been elected as the 20th President in EUROCAE’s history. His election ...

Meet the 2026 EUROCAE Awards Laureates

We are thrilled to reveal the winners of the 2026 EUROCAE Awards, presented yesterday in Dublin during the EUROCAE Symposium. ...

EUROCAE’s 2026 Symposium Sets the Course for Aviation’s Next Era

EUROCAE successfully concluded its 2026 Symposium, held on 22-23 April in Dublin. Marking only the second time Ireland has hosted ...

Open Consultation for ED-136/1A

We are pleased to announce the availability of the following draft EUROCAE document prepared by EUROCAE WG-67 Voice over Internet ...