Congress released a bipartisan report on Monday putting the U.S. Army at fault over the Jan. 29 mid-air collision of a civilian airliner and an Army Black Hawk helicopter.

Subcommittee on Military and Foreign Affairs Chairman William Timmons (R-SC) and ranking member Suhas Subramanyam (D-VA) released their report, “The DCA Incident: Assessing the Military’s Role in the National Airspace Tragedy,” nearly 11 months after the crash. The report blamed a lack of communication between the Army and DCA and the neglect of several precautions on the fatal crash, several of which were the fault of the Army.