American Airlines Group expects merger milestone on April 8

A US Airways plane passes American Airlines planes at Ronald Reagan National Airport in Washington April 23, 2012. REUTERS/Kevin Lamarque

(Reuters) - American Airlines and US Airways expect to receive a single operating certificate from U.S. regulators on April 8, marking a milestone since their December 2013 merger, parent American Airlines Group Inc <AAL.O> told employees in a newsletter on Wednesday.

While the company still has to combine the carriers' reservation systems, a single certificate will mean the Federal Aviation Administration recognizes the airlines as one, and that the majority of their flight, maintenance and dispatch procedures will be identical.

"Achieving SOC is a major milestone, but it does not mean that our integration is complete," the newsletter said.

The company recently said it will transition to a single loyalty program for frequent fliers on March 28.

The FAA could not immediately be reached for comment.

(Reporting By Jeffrey Dastin in New York. Editing by Andre Grenon)