TM 11-5895-1140-40 P/ E2101-AA-PLG-010/ E106 U Y K-42 (V)2/TO 31 SS-2UYK42-14
NOTE
Cannibalization or controlled exchange, when authorized, may be used as a source of supply for items
with the above source codes, except for those source coded "XA" or those aircraft support items restricted
by requirements of AR 750-1.
(2) Maintenance code. Maintenance codes tell you the category 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:
(a) The maintenance code entered in the third position tells you the lowest maintenance category authorized to
remove, replace, and use an item. The maintenance code entered in the third position will indicate authorization to one of
the following categories of maintenance.
Code
Application/Explanation
C - Crew or operator maintenance done within organizational or aviation maintenance.
O - Organizational or aviation unit category can remove, replace, and use the item.
F - Direct support or aviation intermediate category can remove, replace, and use the item.
H - General support category can remove, replace, and use the item.
L - Specialized repair activity can remove, replace, and use the item.
D - Depot category can remove, replace, and use the item.
(b) The maintenance code entered in the fourth position tells whether or not the item is to be repaired and
identifies the lowest maintenance category with the capability to do complete repair (i.e., perform all authorized repair
functions). This position will contain one of the following maintenance codes.
NOTE
Some limited repair may be done on the item at a lower category of maintenance, if authorized by the
Maintenance Allocation Chart (MAC) and SMR codes.
Code
Application/Explanation
O - Organizational or aviation unit is the lowest category that can do complete repair of the item.
F - Direct support or aviation intermediate is the lowest category that can do complete repair of the item.
H - General support is the lowest category that can do complete repair of the item.
L - Specialized repair activity (designate the specialized repair activity) is the lowest category that can do complete repair
of the item.
D - Depot is the lowest category 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 the maintenance of a "B" coded item).
However, the item may be reconditioned by adjusting, lubricating, etc., at the user category.
(3) Recoverability code. Recoverability codes are assigned to items to indicate the disposition action on
unserviceable items. The recoverability code is entered in the fifth position of the SMR Code as follows:
Recoverability
codes
Application/Explanation
Z - Nonreparable Item. When unserviceable, condemn and dispose of the item at the category of maintenance shown in
the third position of SMR Code.
O - Reparable item. When uneconomically reparable, condemn and dispose of the item at organizational or aviation unit
category.
F - Reparable item. When uneconomically reparable, condemn and dispose of the item at direct support or aviation
intermediate category.
H - Reparable item. When uneconomically reparable, condemn and dispose of the item at general support category.
D - Reparable item. When beyond lower category repair capability, return to depot. Condemnation and disposal of item
not authorized below depot category.
L - Reparable item. Condemnation and disposal not authorized below specialized repair activity (SRA).
A - Item requires special handling or condemnation procedures because of specific reasons (e.g., precious metal
content, high dollar value, critical material, or hazardous material). Refer to appropriate manuals/directives for
specific instructions.
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