TM 10-6640-215-13 2-4.  PMCS PROCEDURES - continued. f. After Prolonged Shutdowns.  Perform weekly as well as before operations if you are the assigned operator and have not operated the item since the last weekly or if you are operating the item for the first time. g. Reporting and Correcting Deficiencies.  If your equipment does not perform as required, refer to Chapter 3 under Troubleshooting for possible problems.  Report any malfunctions or failures on the proper DA Form 2404, or refer to DA Pam 738-750 CAUTION • Equipment operation is allowable with minor leakage (Class I or 11).  Of course, you must consider the fluid capacity in the item/system being checked/inspected.  When in doubt, notify your supervisor. • When operating with Class I or Class 11 leaks, continue to check fluid levels as required in your PMCS. • Class ill leaks should be reported to your supervisor or unit maintenance. h. Leakage.  Leakage definitions for operator/crew PMCS shall be classified as follows: Class I     Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops. Class II    Leakage of fluid great enough to form drops but not enough to cause drops to drip from item being checked/inspected. Class III   Leakage of fluid great enough to form drops that fall from the item being checked/inspected. i. Individual  Equipment  PMCS.    PMCS  for  the  petroleum  laboratory  equipment  such  as  environmental  control unit, refrigerator, convection oven, gas alarm control unit, RVP bath, ice maker, copper strip corrosion bath, analytical balance, etc., are contained in their respective TMs (refer to Appendix A for TM numbers). j. Tools and Materials.  The following is a list of tools and materials required for PMCS. No tools are required for Operator's PMCS. 2-5.  EQUIPMENT IS NOT READY/AVAILABLE IFCOLUMN. This column is used for identification of conditions that make the equipment not ready/available for readiness reporting purposes or denies use of the equipment until corrective maintenance is performed. NOTE The terms ready/available and mission capable refer to the same status: Equipment is on hand and is able to perform its combat missions (See AR 700-138). 2-31