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Source Code

TM-55-1905-222-24P Landing Craft Mechanized (LCM-8) (ROHR and Gunderson Models) 1905-01-284-2647 AND 1905-01-284-2648 Manual

Maintenance Code

TM 55-1905-222-24P

AO-(Assembled by

Explanation

org/AVUM

Level)

Items with these codes are not to be requested/requisi-

AF-(Assembled by

tioned individually. The parts that make up the assembled

DS/AVIM Level

item must be requisitioned or fabricated and assembled at

AH-(Assembled by

the level of maintenance indicated by the source code. If

GS Category)

the 3d position code of the SMR code authorizes you to

AL-(Assembled by

replace the item, but the source code indicates the items

SRA)

are assembled at a higher level, order the item from the

AD-(Assembled by

higher level of maintenance.

Depot)

Code

Explanation

XA-Do not requisition "XA"-coded item. Order its next higher assembly. (Also, refer to the NOTE below.)

XB-If an "XB" item is not available from salvage, order it using the FSCM and part number given.

XC-Installation drawing, diagram, instruction sheet, field service drawing, that is identified by manufacturer's

part number.

XD-Item is not stocked. Order an "XD" coded item through normal supply channels using the FSCM and part

number given, if no NSN is available.

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 tells you the level(s) of mainte-

nance 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 level authorized to remove, replace, and use an

item. The maintenance code entered in the third position will indicate

authorization to one of the following levels of maintenance.

Code

Application/Explanation

C-Crew or operator maintenance done within organizational or aviation unit maintenance.

O-Organizational or aviation unit category can remove, replace, and use the item.