TM-1-1730-227-13-P
STANDARD AIRCRAFT MAINTENANCE TRAILER PART NO. 4920-EG-081
TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2009
TM-1-1730-227-13-P - Page 102 of 138
0031 00
TM 1-1730-227-13&P
EXPLANATION OF COLUMNS IN THE REPAIR PARTS LIST AND SPECIAL TOOLS LIST WORK PACKAGES –
CONTINUED
– Continued
Source Code
Application/Explanation
PA
PB
PC
PD
PE
PF
PG
NOTE
Items coded PC are subject to
deterioration.
Stock items; use the applicable NSN to requisition/re-
quest items with these source codes. They are autho-
rized to the level indicated by the code entered in the 3rd
position of the SMR code.
KD
KF
KB
Items with these codes are not to be requested/req-
uisitioned individually. They are part of a kit which is
authorized to the maintenance level indicated in the third
position of the SMR code. The complete kit must be
requisitioned and applied.
MO-Made at Service/AMC level
MF-Made at Field/ASB level
MH-Made at Below Depot Sustainment level
ML-Made at SRA/TASMG
MD-Made at Depot
Items with these codes are not to be requisitioned/re-
quested individually. They must be made from bulk
material which is identified by the P/N in the DESCRIP-
TION AND USABLE ON CODE (UOC) column and
listed in the bulk material group work package of the RP-
STL. If the item is authorized to you by the third position
code of the SMR code, but the source code indicates it is
made at higher level, order the item from the higher level
of maintenance.
AO-Assembled by Service/AMC level
AF-Assembled by Field/ASB level
AH-Assembled by Below Depot Sustainment level
AL-Assembled by SRA/TASMG
AD-Assembled by Depot
Items with these codes are not to be requested/req-
uisitioned individually. The parts that make up the
assembled item must be requisitioned or fabricated and
assembled at the level of maintenance indicated by
the source code. If the third position of the SMR code
authorizes you to replace the item, but the source code
indicates the item is assembled at a higher level, order
the item from the higher level of maintenance.
XA
Do not requisition an "XA" coded item. Order the next
higher assembly. (Refer to NOTE below.)
XB
If an item is not available from salvage, order it using the
CAGEC and P/N.
XC
Installation drawings, diagrams, instruction sheets, field
service drawings; identified by manufacturer’s P/N.
0031 00-2
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