Explanation ing such repair parts will attempt to obtain them  through  cannibalization;  if  not  ob- tainable tbrough cannibalization, such re- pair  parts  will  be  requisitioned  with  sup- porting-justification  through  normal  supply channels. Note.  Source  code  is   not   shown   on   common   hard- ware   items   known   to   be   readily   available   in   Army supply    channels    and    through    local    procurement. (2) Maintenance code. Indicates the lowest category  of  maintenance  authorized  to  install the listed item. The maintenance   level  codes are: Code Explanation O Organizational maintenance F Direct  support  maintenance H General  support    maintenance (3) Recoverability  code. Indicates  whether unserviceable  items  should  be  returned  for  re- covery or salvage. Items not coded are expend- able. Recoverability codes are: Code Explanation R Applied to repair parta and assemblies which are  economically  repairable  at  DSU  and GSU activities and normally are furnished by supply on an exchange basis. (4) Index number.  This  column  also  lists, below the SMR code, an index number for each item in ascending numerical sequence, which is used to locate items in the publication when the  Federal’  stock  number  and/or  reference number is known. b. Federal Stock Number.  Indicates  the  Fed- eral  stock  number  for  the  item. c. Description.  Indicates  the  Federal  item name and any additional description of the item required.  A  part  number  or  other  reference number  is  followed  by  the  applicable  five-digit Federal  supply  code  for  manufacturers  in parentheses. d. Unit of Issue. Indicates the unit used as a basis for issue, e.g., ea, pr_p ft, yd, etc. e.  Quantity  Incorporated  in  Unit  Pack.  Indi- cates the actual quantity contained in the unit pack. f.  Quantity  Incorporated  in  Unit.   Indicates the quantity of the item used in the functional group. g. Fifteen-Day   Organizational   Maintenance Allowances. D-2 (1) The allowance columns are divided in- to four subcolumns. Indicated in each subcol- umn  opposite  the  first  appearance  of  each  item is  the  total  quantity  of  items  authorized  for  the number  of  equipments  supported.  Subsequent appearances of the same item will have no entry in  the  allowance  columns  but  will  have  in  the description  column  a  reference  to  the  first  ap- pearance of the item. Items authorized for use as required but not for initial stockage are i- dentified with an asterisk in the allowance col- umn. (2)  The  quantitative  allowances  for  or- ganizational level of maintenance represents one initial prescribed load for a 15-day period for the  number  of  equipments  supported.  Units  and organizations  authorized  additional  prescribed loads will multiply the number of prescribed loads  authorized  by  the  quantity  repair  parts reflected  in  the  appropriate  density  column  to obtain   the   total   quantity   of   repair   parts authorized. (3) Organizational units providing main- tenance  for  more  than  100  of  these  equipments shall  determine  the  total  quantity  of  parts  re- quired  by  converting  the  equipment  quantity  to a decimal factor by placing a decimal point be- fore the next to last digit of the number to indi- cate  hundredths,  and  multiplying  the  decimal factor  by  the  parts  quantity  authorized  in  the 51-100  allowance  column.  Example,  authorized allowance for 51-100 equipments is 12; for 140 equipments  multiply  12  by  1.40  or  16.80  round- ed off to 17 parts  required. (4) Subsequent changes to allowances will be limited as follows: No change in the range of  items  is  authorized.  If  additional  items  are considered  necessary,  recommendation  should be  forwarded  to  U.S.  Army  Mobility  Equipment Command  for  exception  or  revision  to  the  allow- ance list. Revisions to the range of items au- thorized will be made by this Command based upon  engineering  experience,  demand  data,  or TAERS  information. h.   Thirty-Day   DS/GS   Maintenance   Allow- ances. (1) The  allowance  columns  are  divided  into three  subcolumns.  Indicated  in  each  subcolumn, opposite the first appearance of each item, is the total quantity of items authorized for the number  of  equipments  supported.  Subsequent