Today, in the U.S., cockpit voice recorders (CVR) used on commercial aircraft are only required to capture and store two hours of audio information. After two hours, the most recent information is lost when the CVR, due its limited storage capacity, records over the previous cockpit conversations.

The Modular Open Systems Approach directive has accelerated the adoption of a variety of Modular Open Systems Approach supporting standards, including SOSA, CMOSS, FACE, VICTORY, and GVA, by the Army, Air Force, and Navy.