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SUPPORTING INFORMATION 24-FOOT DIAMETER TROOP CHEST RESERVE (T-10R) PARACHUTE AND THE MIRPS MAINTENANCE ALLOCATION CHART (MAC)
EXPLANATION OF COLUMNS IN TOOL AND TEST EQUIPMENT REQUIREMENTS, TABLE 2 - TM-10-1670-269-23P_251

TM-10-1670-269-23P Parachute Personnel Type: 24-Foot Diameter Troop Chest Reserve (T-10R) NSN 1670-00-892-4218 Manual
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TM 10-1670-269-23&P                                                           0044 00 0044 00-2 Calibrate.  To determine and cause corrections to be made or to be adjusted on instruments or test, measuring, and diagnostic equipments used in precision measurement.  Consists of comparisons of two instruments, one of which is a certified standard of known accuracy, to detect and adjust any discrepancy in the accuracy of the instrument being compared. Remove/Install.  To remove and install the same item when required to perform service or other maintenance functions.  Install may be the act of emplacing, seating, or fixing into position a spare, repair part, or module (component or assembly) in a manner to allow the proper functioning of an equipment or system. Replace.  To remove an unserviceable item and install a serviceable counterpart in its place.  Replace is authorized by the MAC, and is shown as the 3rd position code of the Source, Maintenance, and Recoverability (SMR) code. Repair.  The application of maintenance services, including fault location/troubleshooting, removal/installation, and disassembly/assembly procedures, and maintenance actions to identify troubles and restore serviceability to an item by correcting specific damage, fault, malfunction, or failure in a part, subassembly, module (component or assembly), end item, or system. Overhaul.  The maintenance effort (service/action) prescribed to restore an item to a completely serviceable/operations condition, as required by maintenance standards in appropriate technical publications (i.e., DMWR).  Overhaul is normally the highest degree of maintenance performed by the Army.  Overhaul does not normally return an item to like new condition. Rebuild.  Consists of those services/actions necessary for the restoration of unserviceable equipment to a like new condition, in accordance with original manufacturing standards.  Rebuild is the highest degree of materiel maintenance applied to Army equipment.  The rebuild operation includes the act of returning to zero those age measurements (hours, miles, etc.) considered in classifying Army equipment/components. EXPLANATION OF COLUMNS IN THE MAC, TABLE 1 Column 1, Group Number.  Column 1 lists functional group code numbers, the purpose of which is to identify maintenance significant components, assemblies, subassemblies, and modules with the next higher assembly.  End item group number shall be listed as 00. Column 2, Component/Assembly.  Column 2 contains the names of the components, assemblies, subassemblies, and modules for which maintenance is authorized. Column 3, Maintenance Function.  Column 3 lists the functions to be performed on the item listed in Column 2.  (For detailed explanation of these functions, see the Maintenance Functions information detailed above. Column 4, Maintenance Level.  Column 4 specifies, by the listing of work-time in the appropriate sub column(s), the level of maintenance authorized to perform the function listed in Column 3.  This figure represents the active time required to perform that maintenance function at the indicated level of maintenance.  If the number of complexity of the tasks within the listed maintenance function varies at different maintenance levels, appropriate work-time figures will be shown for each level.  The work-time figure represents the average time required to restore an item (assembly, subassembly, component, module, end item, or system) to a serviceable condition under typical field operating conditions.    This time includes preparation time (including any necessary disassembly/assembly time), troubleshooting/fault location time, and quality assurance/quality control time, in addition to the time required to perform the specific tasks identified for the maintenance functions authorized in the maintenance allocation chart.  The symbol designations for the various maintenance levels are as follows:







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