Appendix B. MAINTENANCE ALLOCATION - TM-11-6625-2884-120059

TM 11-6625-2884-12/NAVAIR 16-35TS3615-1

APPENDIX B

MAINTENANCE ALLOCATION

SECTION I

INTRODUCTION

B-1 . MAINTENANCE ALLOCATION CHART

a. This Maintenance Allocation Chart (MAC) assigns maintenance functions in

accordance with the Three Levels of Maintenance concept for Army Aviation.

These maintenance levels (categories) -- Aviation Unit Maintenance (AVUM),

Aviation Intermediate Maintenance (AVIM), and Depot Maintenance -- are depicted

on the MAC as:

AVUM, which corresponds to an O Code in the Repair Parts and Special Tools

List (RPSTL)

AVIM, which corresponds to an F Code in the Repair Parts and Special Tools

List (RPSTL)

DEPOT, which corresponds to a D Code in the Repair Parts and Special Tools

List (RPSTL).

b. The maintenance to be performed below depot and in the field is

described as follows:

(1) Aviation Unit Maintenance (AVUM) activities will be staffed and

equipped to perfom high frequency "On-Aircraft" maintenance tasks required to

retain or return aircraft systems to a serviceable condition. The maintenance

capability of the AVUM will be governed by the Maintenance Allocation Chart

(MAC) and limited by the amount and complexity of ground support equipment

(GSE), facilities required, authorized manning strength, and critical skil1s

available. The range and quantity of authorized spare modules/components will

be consistent with the mobility requirements dictated by the air mobility con-

cept. (Assignments of maintenance tasks to divisional company size aviation

units will consider the overall maintenance capability of the division, the

requirement to conserve personnel and equipment resources, and air mobility

requirements.)

(a) Company Size Aviation Units: Perform those tasks which consist

primarily of preventive maintenance and maintenance repair and replacement

functions associated with sustaining a high level of aircraft operational

readiness. Perfom maintenance inspections and servicing to include preflight,

daily, intermediate, periodic (or phased), and special inspections as authori-

zed by the MAC or higher headquarters. Identify the cause of equipment/system

malfunctions using applicable technical manual troubleshooting instructions,

built-in-test equipment (BITE), installed aircraft instruments, or test,

measurement, and diagnostic equipment (TMDE). Replace worn or damaged modules/

components that do not require complex adjustments or system alignment and

which can be removed/installed with available skills, tools, and ground support

equipment. Perform operational and continuity checks and make minor repairs

B-1