Interpretation ID: aiam2945
Mechanical Engineering
Motor Coach Industries
Inc.
Pembina
ND 58271;
Dear Mr. Szkolnicki: This responds to your January 2, 1979, request for confirmation that July 23, 1976, interpretation of S5.3.3 and S5.3.4 of Standard No. 121, *Air Brake Systems*, has been incorporated into the body of the regulation. I regret that you did not receive a reply to your letter of November 27, 1978, which was addressed to someone who is no longer in this office.; The interpretation in question has not been incorporated into the bod of the regulation. During a court review of the standard which only recently concluded, the agency was making as few changes to the standard as possible. Consideration is now being given to revision of the standard in minor respects, but no date has been established for action. Until any such action is taken, you may continue to rely on the July 23, 1976, interpretation as the agency's official view of the meaning of S5.3.3 and S5.3.4.; Sincerely, Joseph J. Levin, Jr., Chief Counsel