Refer to OPNAVINST 4790.2 (series) for more information about the AMMRL program. Custody Codes This is a single alpha character code that provides supplemental accountability details about an SE transaction. Also, it shows the effects of transactions on supply and financial records. The codes identify a specific category of SE items placed in the custody of an intermediate maintenance activity (IMA). IMA issues the items to other activities on a subcustody basis. The following paragraphs describes the custody codes. Code D is assigned to items listed only in a detachment list code, requiring management, and having custody code of P or E. Code D will take precedence in IMRL printing. The issuing of allowances for items coded D is done in the same manner as the P-coded item. For example, code D would apply to items required on air capable ships by deployable detachments. Code E is for items used infrequent y (less than once per month). It means the item is available from the supporting IMA as required. The IMA makes the item available to activities. After use, the activities return the item to IMA. Code M is for noncalibratable items requiring management that are not otherwise custody ceded. The quantity authorized for these items is the total quantity required for subcustody by each activity supported. An example of an M-coded item is a carrying case for a calibratable item when it is listed in the source data as a separate end item. There are two steps for assigning items in code M. First, the support equipment controlling authority (SECA) identifies the item. Second, NAVAIRENGCEN assigns code M to the item. Code N is automatically assigned to items that do not require calibration or management, and, consequently, not otherwise coded. Code N is automatically entered if the maintenance level is intermediate (I). Code P is for items weighing over 200 pounds (over 300 pounds for wheeled equipments). When authorized for a supporting IMA, the IMA or MALS contingency support package quantity is the total quantity required for subcustody to each O-level maintenance activity. The items are issued on a subcustody basis to squadrons for full-time utilization. The squadron returns the item to the IMA prior to deployment. While deployed, the new supporting IMA issues these items to embarked squadrons. Code L is for all items requiring calibration and management. These are items designated for use at O-level maintenance and not already coded D, E, or P. The quantity authorized is the total quantity required for subcustody by each activity supported. The O-level activities retain the items when deployed. Individual Material Readiness List The IMRL is a consolidated allowance list of authorized quantities of SE items. These are items required by an activity to perform its assigned maintenance level functions. The following paragraphs describe the terms used in IMRL. Support eguipment (SE) refers to IMRL and non-IMRL equipment required to make a system, subsystem, or end item equipment operational. The Primary Support Equipment Controlling Authority (PSECA) is the term applied to COMNAVAIRSYSCOM. The COMNAVAIRSYS- COM functions as the centralized SE inventory management authority. PSECA is responsible for coordinating distribution of in-use assets among the SECAs. Also, PSECA is responsible for prioritization of SE procurement and distribution of new SE. SECA is the term applied to major aviation commands that exercise administrative control of AMMRL Program SE end items. SECA performs the allowance and inventory control of these items. The following is a list of designated SECAs: . Commander, Naval Air Force, Atlantic (COMNAVAIRLANT) . Commander, Naval Air Force. Pacific (COMNAVAIRPAC) l Chief of Naval Air Training (CNATRA) . Commander, Naval Air Reserve Force (COMNAVAIRRESFOR) . Naval Air Maintenance Training Group (NAMTRAGRU) . Commander, Naval Air Systems Command (COMNAVAIRSYSCOM) NOTE: COMNAVAIRSYSCOM has designated Commanding Officer, Naval Aviation Maintenance Office (NAMO) to execute SECA functions for all NAVAIR field activities and depots. NAMO also has SECA functions for naval weapons stations with SE supplied by NAVAIR under the scope of the AMMRL program. 8-20