TM 1-4920-924-13&P
FIELD MAINTENANCE
AVIATION SHOP EQUIPMENT CONTACT MAINTENANCE (AV SECM) SYSTEM
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE ITEMS (BII) LISTS
Scope
This work package lists COEI and BII for the Aviation Shop Equipment Contact Maintenance (AV SECM) System
to help you inventory items for safe and eficient operation of the equipment.
General
The COEI and BII information is divided into the following lists:
Components of End Item (COEI). This list is for information purposes only and is not authority to requisition
replacements. These items are part of the Aviation Shop Equipment Contact Maintenance (AV SECM) System.
As part of the end item, these items must be with the end item whenever it is issued or transferred between
property accounts. Items of COEI are removed and separately packaged for transportation or shipment only when
necessary. Illustrations are furnished to help you ind and identify the items.
Basic Issue Items (BII). These essential items are required to place the Aviation Shop Equipment Contact
Maintenance (AV SECM) System in operation, operate it, and to do emergency repairs. Although shipped
separately packaged, BII must be with the Aviation Shop Equipment Contact Maintenance (AV SECM) System
in operation during operation and when it is transferred between property accounts. Listing these items is your
authority to request/requisition them for replacement based on authorization of the end item by the TOE/MTOE.
Illustrations are furnished to help you ind and identify the items.
Explanation Of Columns In The COEI And BII Lists
Column (1) Item Number. Gives you the number of the item listed.
Column (2) National Stock Number (NSN). Identiies the stock number of the item to be used for requisitioning
purposes.
Column (3) Description, CAGEC, and Part Number. Identiies the Federal item name (in all capital letters) followed
by a minimum description when needed. The stowage location of COEI and BII is also included in this column. The
last line below the description is the CAGEC (Commercial and Government Entity Code) (in parentheses) and
the part number.
Column (4) Usable On Code (UOC). When applicable, gives you a code if the item you need is not the same for
different models of equipment.
Column (5) Unit of Issue (U/I). Indicates the physical measurement or count of the item as issued per the National
Stock Number shown in column (2).
Column (6) Qty Rqr. Indicates the quantity required.
00301
