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TM 10-5430-242-12&P
0037 00
0037 00-3
Change 1
Maintenance Code. Maintenance codes tell you the level(s) of maintenance authorized to use and repair
support items. The maintenance codes are entered in the third and fourth positions of the SMR code as
follows:
Third position. The maintenance code entered in the third position tells you the lowest maintenance level
authorized to remove, replace, and use an item. The maintenance code entered in the third position will
indicate authorization to the following levels of maintenance:
Maintenance Code
Application/Explanation
C –
Crew or operator maintenance done within unit/AVUM maintenance.
O –
Unit level/AVUM maintenance can remove, replace, and use the item.
F –
Direct support/AVIM maintenance can remove, replace, and use the item.
H –
General support maintenance can remove, replace, and use the item.
L –
Specialized repair activity can remove, replace, and use the item.
D –
Depot can remove, replace, and use the item.
Fourth position. The maintenance code entered in the fourth position tells you whether or not the item is
to be repaired and identifies the lowest maintenance level with the capability to do complete repair
(perform all authorized repair functions).
NOTE
Some limited repair may be done on the item at a lower level of maintenance, if
authorized by the Maintenance Allocation Chart (MAC) and SMR codes.
Maintenance Code
Application/Explanation
O –
Unit/AVUM is the lowest level that can do complete repair of the item.
F –
Direct support/AVIM is the lowest level that can do complete repair of the
item.
H –
General support is the lowest level that can do complete repair of the
item.
L –
Specialized repair activity is the lowest level that can do complete repair
of the item.
D –
Depot is the lowest level that can do complete repair of the item.
Z –
Nonreparable. No repair is authorized.
B –
No repair is authorized. No parts or special tools are authorized for
maintenance of “B” coded item. However, the item may be reconditioned
by adjusting, lubricating, etc., at the user level.
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