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