MIL-M-38769 Revision C, October 22, 1982
MANUALS, TECHNICAL: WORK UNIT CODE
This requirement prescribes the requirements for the development and preparation of Work Unit Code (WUC) manuals for Air Force equipment.
Under the Air Force Data Collection System, each maintenance action performed on Air Force equipment must be fully and accurately documented. The volume of data collected requires the use of automatic data processing techniques. The use of automatic data processing (ADP) equipment requires that the data input be coded in such a manner that it can be "read" by the data processing machines. Standard codes have been developed for recording the type of maintenance being performed, the action taken to correct a deficiency, when a deficiency was discovered, and the type of malfunction that occurred. Identification codes, called Work Unit Codes, are used to identify the specific assembly or part within an end item on which an action was performed. Each work unit code manual shall contain complete listings of all "Work Unit" (support general and equipment identification), "Unique Data Codes for MCS Maintenance Cost System", "Type Maintenance," "Action Taken," "When Discovered," and "How Malfunctioned" codes applicable to the equipment covered by the manual.