Q1. Q2. Q3. What work center in an organizational main- tenance activity acts as the nerve center for all maintenance actions within an activity? What officer is responsible for the overall produc- tion effort and material support of a maintenance department? What automated management information system (MIS) provides a Navy aviation maintenance activity with the information to aid in the day-to-day management of maintenance for assigned aircraft and equipment? PLANNED MAINTENANCE SYSTEM LEARNING OBJECTIVES: Identify the purpose of the Planned Maintenance System (PMS). Identify the purpose of reference publications that are used in the Planned Maintenance System (PMS). Define the different types of aircraft and equipment inspections. Identify authorized deviations for aircraft inspections. The Planned Maintenance System (PMS) is a program to ensure that aircraft and aeronautical equipment are maintained throughout their service life. This is done by controlling the degradation that is caused by time, use, climatic exposure (weather), and operational cycles. The PMS has the following purposes: Simplify complex maintenance tasks Provide a readily manageable maintenance program Facilitate the scheduling and controlling of maintenance actions Provide a means to detect impending equipment failures Facilitate an effective quality assurance (QA) process Forecast and plan manpower and material requirements The PMS program consists of a series of scheduled maintenance requirements and inspections that are performed on aeronautical equipment, including aircraft, in accordance with prescribed PMS publications. PMS PUBLICATIONS An activity’s effective use of PMS publications and adherence to their policies and procedures is critical to maintaining aircraft and equipment in a high state of readiness through preventive maintenance. Preventive maintenance refers to the servicing and care that is required to maintain aircraft and equipment in satisfactory operating condition. Preventive maintenance is accomplished primarily through systematic aircraft and equipment inspection to detect and correct impending failures before they occur or develop into major defects. The Naval Air Systems Command (NAVAIRSYSCOM) issues scheduled maintenance requirements by publishing PMS publications for every model of Navy and Marine Corps aircraft. PMS publications prescribe the following: Standardized procedures for Navy and Marine Corps aviation maintenance activities The planning, scheduling, and performance of the scheduled maintenance tasks for aircraft and aeronautical equipment Basic PMS publications include the following: Maintenance requirements cards (MRCs) Periodic maintenance information cards (PMICs) Sequence control cards (SCCs) Checklists Revisions to PMS publications are based on the data that is collected from maintenance experience with aircraft. NAVAIRSYSCOM publishes these revisions at intervals to add, delete, or change maintenance requirements. Maintenance Requirements Cards Prescribed maintenance requirements publications are presented to maintenance personnel in the form of maintenance requirements cards (MRCs), shown in figure 4-1. Usually, a set of cards is provided for each aircraft model or equipment. For each type of scheduled inspection, one set of MRCs is provided. All of the minimum requirements for the accomplishment of any particular scheduled maintenance task, or portion thereof, are contained in these cards. 4-2