CONSOLIDATED REMAIN-IN-PLACE LIST (CRIPL)—A microfiche publication iden- tifying those intermediate level (I-level) and depot level (D-level) repairable that are authorized to remain in an aircraft until a serviceable item is received from supply. COST CODE—A 12-position number to classify accounting transactions by providing the 8-position Julian date and serial number from a requisition and a 2-position fund code. The cost code is always preceded by 2 zeros on accounting data entries to make up the 12 positions. CRITICAL ITEM—An item essential to the operational readiness of a ship or aircraft and in short supply in system stocks (or expected to be) for an extended period of time. Also used afloat to refer to high-usage, bulky consumables (also referred to as never-out items) that, because of shipboard space constraints, must be replenished at every opportunity. CUSTODY—The physical possession of material and the assumption of responsibility against its improper usage and loss. DEFENSE LOGISTICS AGENCY (DLA)– A supply support organization assigned manage- ment responsibility and control of items in common use by all military services. About 60 percent of the line items in the integrated Navy supply system are managed by DLA. These items are identified by a 9 in the first position of the cognizance symbol. DEPOT LEVEL MAINTENANCE INTER- SERVICE SUPPORT AGREEMENT—An agree- ment whereby one service performs depot level maintenance work for another service. DOD HAZARDOUS MATERIALS INFOR- MATION SYSTEM (HMIS)—A system that provides accurate, complete information to both fleet and shore personnel on the procurement, use, transportation, handling, storage, and disposal of hazardous materials. DUE-IN FROM MAINTENANCE (DIFM)— Depot-level repairable (DLR) assets that are inducted into aircraft intermediate maintenance department (AIMD) and are expected to be placed in stock upon completion of repair. ENGINE TYPE EQUIPMENT CODE—A cross-reference between all maintenance-type equipment codes and the aircraft-type equipment codes under which OPTAR obligations and expenditures will be accumulated. EQUIPAGE—Items that require management control afloat because of high unit cost, vulnerability to pilferage, or essentiality to the ship’s mission. Chargeable items of equipage are identified in procurement, receipt, and other documents by the letter E in the second position of the applicable fund code. EQUIPMENT—Any functional unit of hull, mechanical, electrical, ordnance, or electronic- type material operated singly or as a component of a system or subsystem and identified by a component identification number (CID), numerical control code (NCC), allowance parts list (APL), or similar designation. EQUIPMENT VALIDATION—The pro- cedure of making sure that the equipment descriptions shown on the allowance lists agree with the nameplate data on the installed equipment. EQUIVALENT ITEM—An item similar to another item to the extent that its characteristics are in strict accordance with drawings, specifica- tions, standards, and performance qualification tests within limits or tolerances specified therein. EXPEDITIOUS REPAIR (EXREP)—The removal of a component from an aircraft or equipment, expedited delivery, and immediate induction for repair with the goal of the earliest return to the customer. EXREP is normally used when a replacement for stock is not available. FREQUENCY OF DEMAND—The number of times that an item is requested during a specific period of time regardless of the quantity requested or issued. GOVERNMENT BILL OF LADING (GBL)— A transportation contract between a commercial carrier and the U.S. Government. The Standard Form 1103 provides delivery instructions to the carrier while the Standard Form 1103B serves as a receipt document for the consignee. ILLUSTRATED PARTS BREAKDOWN (IPB)—A list prepared by the manufacturer for each model aircraft, engine accessory, electronic equipment, or support equipment (SE). AII-3