materials to customers, providing status on all requirements received, maintaining all aviation PEBs, and expediting all high-priority requisi- tions. Individual unit responsibilities of the SRS are listed in the next paragraphs. REQUISITION CONTROL UNIT The RCU receives all requests for material requirements, prepares appropriate documenta- tion, maintains appropriate files and registers, and provides status to the customer. All mate- rial requests must include the following informa- tion: . Organizational code. . Job control number (JCN). Requests for material in support of technical directives compliance (RECTYP 64) or initial issue (REC- TYP 65) requires notification of the SSC. On RECTYP 64 issues, the WUC may be omitted. On RECTYPS 65,66, and 67 issues, the JCN and the WUC may be omitted. . Type equipment code (TEC). . Bureau/serial number. Maybe omitted if not applicable. l Work unit code (WUC). Requests for consumable materials that do not have a unique WUC indicate the WUC of the subsystem on which the consumable material is being in- stalled. . CAGE code. This element contains the engine TEC instead of the CAGE code when an aircraft engine is requisitioned. . Manufacturer’s part number. . Quantity. . Document number. l Demand code. . Delivery point. . Fund code. May be omitted if not applicable. l Project code. Can be found in NAVSUP P-437 and NAVSUP P-485. l Priority. l Required delivery date. Maybe omitted if not applicable. l Advice code. Mandatory for repairable. Technical Research Unit The TRU is responsible for the verification of requisition data such as part number, stock number, references, and other technical data. When applicable, a thorough technical research is made for substitution, interchangeability, and alternate national item identification numbers (NIINs). When an NSN for requested material cannot be identified, enter the manufacturer’s part number in its place, CAGE code in block R and 99 in card columns 55 and 56. In addition, the following data is required: Document identifier (DI). National stock number (NSN). Unit of issue. Cognizant symbol (COG). If COG 4V is entered indicating an aircraft engine request, block R must contain an engine TEC instead of a CAGE code. Advice code, Mandatory for repairable items with NSN. If advice code not available, obtain from requisitioner. Purpose code. Condition code. Not required for SUADPS procedures. Material control code (MCC). Like the advice code, the MCC is mandatory for repairable items with NSN. 5-8