equipment  and  perform  preoperational  maintenance. Preoperational    maintenance    is    like    checking    your automobile before you drive it; that is, checking your oil, tire pressure, battery, radiator, and so forth. The  point  is,  if  the  support  equipment  unit  has developed a problem, return it to the support equipment shop.  Let the technicians work on it.  They have had the training.    Most support equipment is dangerous.    The MEPPs,  for  instance,  produce  1,000  amps,  which  is more than enough to electrocute you.   Hydraulic units have working pressures as high as 5,000 psi.  You do the operating and leave the maintenance to the technicians. The three levels of naval aviation maintenance are organizational, intermediate, and depot. Organizational maintenance  is  the  general  upkeep  of  aircraft  that  is preformed by aviation squadrons. Intermediate maintenance   is   performed   at   AIMDs,   and   includes component inspection, disassembly, repair, reassembly, testing,   and   fabrication.   Depot-level   maintenance   is normally the complete repair of the entire aircraft and systems.  You  will  most  likely  be  concerned  with  the organizational level. PREOPERATIONAL MAINTENANCE Preoperational maintenance is performed by organizational and intermediate maintenance personnel.   A   preoperational   card   is   used   to   inspect support    equipment    prior    to    its    use.    All    support equipment you operate will have a preoperational card specific to the type of equipment.   The card is easy to use and must be completed in the numerical sequence, and it must be accomplished prior to the first use of the day   and   any   use   thereafter. All   types   of   support equipment require a preoperational check before each use.  The  preoperational  card  does  not  state  how  to repair, make adjustments, or correct defective conditions.   These functions are performed in AIMD. QUALIFICATIONS FOR OPERATING SE As a direct result of support equipment accidents, the  Navy  established  a  Support  Equipment  Operator Training and Licensing Program.    The purpose of the program is to make sure you receive effective training in  the  safe  and  efficient  operation  of  specific  aircraft support equipment, as prescribed in the Naval Aviation Maintenance Program (NAMP), OPNAVINST 4790.2 (series).    You  cannot,  without  great  risk,  properly  or safely  move,  secure,  service,  or  maintain  an  aircraft using  support  equipment  unless  you  are  completely trained  and  qualified  on  both  the  support  equipment and the aircraft. Training The SE Operator Training and Licensing Program has two distinct parts—Phase 1 and Phase 2. Phase 1 covers the support equipment, and Phase 2 covers the operation or use of the support equipment on a specific type of aircraft.  You get your Phase 1 training from AS ratings at the support equipment school sponsored by AIMD.  This  school  covers  daily  pre/post  operational inspections,   safety,   appropriate   gear,   and   operating procedures on each specific type of equipment.  Phase 2 training  is  handled  by  your  own  squadron  or  unit. Usually,  the  program  is  managed  by  the  line  division and  monitored  by  quality  assurance  (QA). This  is practical on-the-job training, relating what you learn in support equipment school with actual aircraft handling, servicing, or maintenance.   While in Phase 2 training, you are under the direct supervision of a qualified and licensed  operator  of  the  support  equipment  you  are using. Licensing Once you complete training, you are eligible for a USN Aviation Support Equipment Operator's License (OPNAV  4790/102),  commonly  known  as  a  "yellow license."   This license is required to check out certain types  of  support  equipment  from  the  AIMD  support equipment    division    and/or    to    operate    the    support equipment. When you complete Phase 1, a certificate of completion    is    issued    to    your    unit. It    certifies completion   of   Phase   1   training   only   and   does   not authorize  you  to  operate  any  given  piece  of  support equipment.    When  you  complete  Phase  2  training  in your unit, you are issued your "yellow license," which is signed by your commanding officer (or the aircraft maintenance officer if he/she is so authorized in writing by the commanding officer). Your "yellow license" is good for 3 years from the date issued for each specific type of support equipment and aircraft.   After 3 years you must requalify.  If you transfer to a new outfit with different types of aircraft, your license is not valid.  You must requalify under Phase 2 training for the new types of aircraft and be issued a new license. Misuse/Abuse Your commanding officer has the responsibility to revoke    your    yellow    license    under    the    following conditions: 9-19