*TM 10-1670-287-23&P  AIR FORCE T.O. 14D1-2-468-2  MARINE CORPS TM 09011A-23&P  NAVY NAVAIR 13-1-38  HEADQUARTERS, DEPARTMENTS OF  THE ARMY, AIR FORCE, NAVY, AND  HEADQUARTERS, U.S. MARINE CORPS  WASHINGTON, D.C., 30 JULY 2003  REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS  DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.  *This manual supersedes TM 10-1670-287-23&P, dated 31 January 1992   Change 1 i You can help improve this manual. If you find any mistakes or if you know of a way to  improve the procedures, please let us know.  ARMY  - Mail DA Form 2028 (Recommended Changes to Publications and Blank Forms), or  DA Form 2028-2, located in the back of this manual, direct to: Commander, U.S. Army Tank- automotive & Armament Command, ATTN: AMSTA-LC-CECT, Kansas Street, Natick, MA  01760. You may also send in your recommended changes via electronic mail directly to  amssbriml@natick.army.mil. A reply will be furnished directly to you. Instructions for  sending electronic 2028 may be found at the back of this manual immediately preceding the  hard copy 2028.  AIR FORCE  – Reports by U.S. Air Force units should be submitted on AFTO Form 22,  Technical Order Publication Improvement Report and Reply, and forwarded to the address  prescribed above for the Army. An informational copy of the prepared AFTO Form 22 shall  be furnished to WP-ALC/TILTA, 420 2$^{nd}$ Street, Suite 100, Robins AFB, GA 31098-1640.  NAVY  – Submit NAVSEA Form 4160/1 (REV 299) to Commander, NSDSA Code 5E30,  NAVSURFSENDIV, 4363 Missile Way, Port Hueneme, CA 93043-4307. A reply will be sent to  you. MARINE CORPS  –Submit NAVMC Form 10772 to Commander, ATTN: (Code 850), Marine  Corps Logistics Bases, 814 Radford Blvd., Albany, GA 31704-1128. A reply will be sent to  you. UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)  FOR MC-4 RAM AIR FREE-FALL PERSONNEL PARACHUTE SYSTEM NSN 1670-01-306-2100 TECHNICAL MANUAL 