TM 9-2330-390-14&P B-3 B-3. EXPLANATION OF COLUMNS IN THE MAC, SECTION II (Con’t). a. Column (6) - Remarks. This column shall, when applicable, contain a letter code, in alphabetic order, which shall be keyed to the remarks contained in Section IV. B-4. EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS SECTION III. a. Column (1) - Tool or Test Equipment Reference Code. The tool and test equipment reference code correlates with a code used in the MAC, Section II, Column 5. b. Column (2) - Maintenance Level. The lowest level of maintenance authorized to use the tool or test equipment. c. Column (3) - Nomenclature. Name or identification of the tool or test equipment. d. Column (4) - National/NATO Stock Number. The National or NATO Stock Number of the tool or test equipment. e. Column (5) - Tool Number. The manufacturer’s part number. B-1. EXPLANATION OF COLUMNS IN REMARKS, SECTION lV. a. Column (1) - Reference Code. The code recorded in the MAC, Section II, Column 6. b. Column (2) - Remarks. This column lists information pertinent to the maintenance function being performed as indicated in the MAC, Section II, Column 6. Section II. MAINTENANCE ALLOCATION CHART (1) Group Number (2) Component/ Assembly (3) Maintenance Function (4) Maintenance Level (5) Tools and Equipment (6) Remarks Unit DS GS Depot C O F H D 00 M1022A1 DOLLY SET 06 ELECTRICAL SYSTEM 0608 Miscellaneous Items Junction Box Assembly Replace Repair 0.5 1.0 1 1,2 Signal Conditioning Box Replace Repair 0.5 1.0 1 1,2