ATTRITION QUANTITY

Attrition requirements are determined from the site's BCM actions. Activities may approximate the attrition requirements for the purpose of allowance change request-fixeed (ACR-F) by using the BCM rate computation. Compute the raw attrition quantity according to FASOINST 4441.15 or FASOINST 4441.16.

LOCAL REPAIR CYCLE REQUIREMENT (LRCR) QUANTITY

The operating site may simulate the LRCR determination for the purpose of ACR-F submission and allowance negotiations by using the activity's constrained TAT. The following principles apply in determining LRCR levels:

Table 4-1.-Constrained Turn-Around Time

. The item is locally repairable at the organizational or intermediate level of maintenance. l Constrained TAT is used in the computation (see

Table 4-1). The TAT is the number of calendar days between removal of the item for processing through repair cycle until it is available for reinstallation.

In computing the total average TAT for each NIIN, use the lower figure of the actual experience or maximum allowed time for each repair element. After summing the individual elements, the total NIIN average will be constrained to 20 days. The constrained average daily NIIN TAT is used in the calculation of LRCR values.

To determine the LRCR quantity, use the computation formula and Poisson distribution table (part of enclosures) in FASOINST 4441.15 or FASOINST 4441.16.

SUMMARY

In this chapter, we discussed the Navy Supply System echelons and their functions for managing aeronautical materials in the Navy. Aeronautical material is composed of consumable and repairable items. We discussed the difference between these categories of material and the procedures used to determine the activity's stocking levels for each category.

The primary inventory manager of aeronautical materials in the Navy is the Naval Inventory Control Point-Philadelphia. The repairable items are categorized as field level repairable (FLR) and aviation depot level repairable (AVDLR). The AVDLR items represent the most significant dollar investment in the _{aeronautical inventory.} Therefore, strict inventory control is required to manage these items.

The activities that are required to provide supply support to aircraft and aeronautical equipment will be outfitted with items for stock. The designated activity is outfitted through the AVCAL/SHORCAL process. After the AVCAL/SHORCAL process, any increase or decrease to the allowance quantity must be submitted to the NAVICP on the Allowance Change Request-Fixed (ACR-F) form. The FLRs may be carried in purpose code W or L of an activity's fixed allowance. The FLRs that are excess to the authorized allowance are carried in A purpose code. Ships carry FLRs under stores account 51000 pending issue to the customer. The ownership of AVDLR items relate to the stores account they are carried under. These stores accounts could be the DBOF, APA, contractor supported, and end-use ashore or afloat.

We discussed the different Navy management programs for AVDLR items. These programs provide specific procedures in inventory management, scheduling, repair, carcass tracking, reclamation, and support of AVDLRs.

Managing repairable material has become more significant in today's Navy. The activities must ensure that procedures for processing transactions are being followed. Since the number of AVDLR items in the Navy has increased, intensive management procedures are required. The inventory management and carcass tracking programs provide the necessary procedures in support of the AVDLR.

We discussed the carcass tracking and the Advanced Traceability and Control (ATAC) programs. The carcass tracking program includes shipment of retrograde, maintaining carcass tracking records (CTRs), carcass tracking follow-up inquiry from NAVICPs, replies from shipping activities, and billings. The follow-up inquiry documents must be processed within the prescribed time frame to prevent additional billing from the NAVICPs.

To prevent the duplication of effort and to ensure currency of information, certain paragraphs in this chapter refer you to the reference(s) that describe the subject in detail.