TM 55-1500-342-234-8. DD Form 365-3 (Chart C- Basic Weight andBalance Record).a. The CHART C is a continuous and permanenthistory of the aircraft weight, moment/index and centerof gravity position. All permanent changes to theaircraft basic weight and moment, regardless of size,shall be recorded (typed or clearly written in ink) on theCHART C to keep it correct and up-to-date. The lastbasic aircraft weight, moment, and c.g. or index shallbe considered the most current data and the baseline forall subsequently dated aircraft loading calculations.b. At the time of delivery of a new aircraft, themanufacturer enters the aircraft basic weight, moment,and c.g. or index on the CHART C. The itemized list ofthe equipment which is included in the aircraft basicweight is shown in the first IN AIRCRAFT column underthe RECORD OF CHECKING section of the CHART A.c. Additions and/or subtractions to the basic weightand moment/index on CHART C will be accomplishedas follows:(1)Whenever equipment is added to orremoved from the aircraft, an entry must be made onthis chart. If the item is listed on the CHART A, enterthe identical item number, description and applicableweight, arm, and moment data on the CHART C. If theitem is not listed on the CHART A, determine its weightand arm by actual measurement or obtain this data fromthe applicable MWO and record it, and the moment, onboth the CHART C and CHART A. Any change which iscaused by a specific MWO will carry a reference to theMWO number. Do not enter check marks on theCHART A for these items until a complete inventory ismade.(2)Subsystem modifications or structuralchanges shall be recorded in the same manner with thechange in weight and moment added to or subtractedfrom the current total. Whenever such changes areprovisions for equipment such as structural mounts,electrical wiring, or air conditioning, they will be listed asseparate line items.(3)Whenever a CHART A inventory revealsequipment changes, subsystem modifications, orstructural changes not already recorded in the CHARTC, the change in weight and moment shall be posted asrequired in the preceding paragraphs. The newlycalculated basic weight, momentand index shall be dated to agree with the inventorydate entered on the CHART A.(4)Whenever an aircraft is weighed, theCHART C will be updated to: (1) reflect any changesresulting from the CHART A inventory and (2) show thenew basic weight, simplified moment, and index or c.g.from the FORM B AIRCRAFT WEIGHING RECORD(DD Form 365-2). The date entered on the CHART Cshall agree with the inventory date entered on theCHART A and the weighing date entered on FORM B.d. Whenever the CHART C basic weight ischanged by ± 3/10 of 1% and/or basic C.G. is changedby ± 0.3 inches, a new FORM F which reflects thischange, must be prepared. The requirement fororiginating new FORM F's when aircraft equipment,which is part of the aircraft basic weight, is temporarilyadded to, removed from, or relocated within the aircraftbecause of maintenance, specific mission requirements,etc., may be eliminated by making the following entrieson the Aircraft Inspection and Maintenance Record (DAForm 2408-13-112408-13-1-E).(1)In block 16 enter a Red Diagonal (/).(2)In block 17 enter a description of theaircraft equipment temporarily added, removed, orrelocated. The resulting increase or decrease in aircraftweight and moment will be included in this entry. Thisentry shall conclude with the following statement:"CHANGE NOT ENTERED ON CHART C."(3)Continue to perpetuate the entry on DDForm 2408-13 or transfer to the Uncorrected FaultRecord (DA Form 2408-14) in accordance with currenttechnical manual procedures until the aircraft is returnedto the previous configuration or the CHART C is updatedto reflect the change.(4)Temporary changes in basic weight maybe reflected on DA Form 2408-13-1/2408-13-1-E or DAForm 2408-14/2408-14-E for a period not-to-exceed 90days. If not accomplished sooner, the DD Form 365-3will be updated to reflect the temporary change at theexpiration of this 90 day period.Change 8 4-10
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