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TM 5-4930-226-12&P
APPENDIX D
MAINTENANCE ALLOCATION CHART
Section I.
INTRODUCTION
D-1. Maintenance Allocation Chart (MAC)
a. General. This MAC assigns maintenance func-
tions in accordance with the Three Level Maintenance
concept. The three levels are depicted on the MAC as:
UNIT level–corresponds to an O code in
the Repair Parts and Special Tools List
(RPSTL). A C code entry under UNIT
denotes maintenance performed by the
crew or operator within UNIT
maintenance.
INTERMEDIATE level—corresponds
to an For H code in the RPSTL.
DEPOT level—corresponds to a D code
in the RPSTL.
b. Unit Maintenance. Maintenance to be perform-
ed in the Unit level is described as follows:
(1) Unit Maintenance activities are staffed and
equipped to perform high frequency on-equipment
maintenance tasks required to retain or return equip-
ment to a serviceable condition. These tasks include
preventive maintenance and repair and replace func-
tions associated with a high level of mission
capability.
(2) Unit Maintenance inspection and servicing
include daily (usually performed by operator or crew),
periodic, and special inspections, as authorized by the
MAC or higher headquarters.
(3) Unit level maintains a Combat Prescribed
Load List (PLL) which consists of items on the Man-
datory Parts List (MPL) and items which are demand
supported.
(4) Unit level performs troubleshooting, replace,
and limited repair functions as authorized by the
MAC, RPSTL, and applicable technical manuals.
c. Intermediate Maintenance. Maintenance to be
performed in the Intermediate level is described as
follows:
(1) One stop maintenance support through use
of mobile weapon system oriented maintenance teams
to perform authorized maintenance (that exceeds Unit
level capability) to effect quick repair and return to
user capabilities.
(2) Maintains a Combat Authorized Stockage
List (ASL), Mandatory Parts List (MPL), Direct. Ex-
change (DX), and provides limited Operational
Readiness Float (ORF) for supported units.
(3) Provides collection, classification, and
recovery services for serviceable and unserviceable
materiel and maintains a Battle Damage Assessment
(BDA) capability.
(4) Provides maintenance support for the
theater supply system through repair of components
and DX items.
(5) Provides maintenance units composed of
commodity oriented platoons which may be
augmented by support teams that deploy forward if
the tactical situation permits.
(6) Maintains Operational Readiness Float
(ORF) stocks in support of the theater.
d. Depot Maintenance. Depot level functions are
authorized as indicated by entries in the Depot (D)
Maintenance level column (4) in the MAC.
Change 4
D - 1
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