TM 9-2815-250-24&P 1-5. QUALITY ASSURANCE (continued). b. Defective  material  received  through  the  supply  system  should  be  reported  on  SF  Form  368.    Instructions  for preparing the reports are provided in AR 702-7.  Mail your completed form directly to: Commander U.S. Army Tank-automotive and Armaments Command ATTN: AMSTA-TR-E/MPA/267 Warren, MI 48397-5000 1-6. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS. If  your  Diesel  Engine  Assembly,  Hatz  2  G  40,  needs  improvement,  let  us  know.    Send  us  an  equipment  improvement recommendation (EIR).  You, the user, are the only one who can tell us what you do not like about the equipment.  Let us know why you don't like the design or performance.  Put it on an SF Form 368 and mail it to: Commander U.S. Army Tank-automotive and Armaments Command ATTN: AMSTA-TR-E/MPA/267 Warren, Ml 48397-5000 1-7. LIST OF ABBREVIATIONS AND ACRONYMS. approx. approximately APU auxiliary power unit AR Army regulation ATTN attention BT bottle BX box C Celsius CAGEC commercial and government entity code cc cubic centimeter cm centimeter CN can CPC corrosion prevention and control cu in cubic inch DA Department of the Army DD Form Department of Defense Form DOD Department of Defense DSN defense switching network EIR equipment improvement recommendation F Fahrenheit ft foot ft-lb foot-pound GL gallon in. inch kg kilogram km kilometer kPa kilopascal L liter 1-2