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Water Brakes
REVIEW QUESTIONS - 14310_201

Aviation Boatswains Mate E - Aviation theories and other practices
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Standby If the order for the STANDBY condition of securing is given, it usually comes after the day's launching operations are completed and there is no possibility of additional launching within 12 hours. The   post-launch   duties   and   inspection   must   be performed according to the MRCs. Shutdown The order for SHUTDOWN condition of securing the catapult is given when the catapult is placed out of service for maintenance or when the ship is in port. Cold Iron When    the    catapult    will    not    be    required    for launching operations for an extended period of time, or the steam system and preheat system must be secured and the components allowed to cool down. INSPECTIONS AND MALFUNCTIONS The  entire  catapult  should  be  kept  as  clean  as possible.  It  should  be  wiped  down  daily  to  remove excess   grease,   oil,   and   dirt.   All   catapult   personnel should  be  constantly  alert  for  any  unusual  sound  or action of the machinery. Report any unusual condition to the catapult officer for immediate investigation. Periodic Inspections Prior to the first launching of each day's operations, execute  the  PMS  preoperational  inspection  according to the MRCs. After   each   day's   operation,   perform   the   PMS postoperational inspection according to the MRCs. Other inspections must be conducted in addition to preoperational  and  postoperational.  These  inspections are also accomplished through the use of MRCs. Prior  to  conducting  an  inspection  or  maintenance on  catapult  equipment  where  an  injury  could  occur from careless operation, make sure the following safety precautions   have   been   accomplished   in   the   order indicated: 1. Disconnect the grab from the shuttle and move it fully aft. 2. Close   the   main   steam   supply   to   the   steam accumulator. 3. Reduce steam pressure in the steam accumulator to atmospheric pressure. 4. Open the retraction-engine accumulator blowdown valve. 5. Station a safety person at the ICCS, CCP, main control console and deckedge control manning sound-powered telephones to prevent tampering with catapult controls. 6. Station a safety person at the retraction engine and the water-brake tank, manning sound-powered telephones. 7. Tag    the    steam-smothering    valve    "out    of service." 8. Station a safety person on the flight deck (in the shuttle area) to prevent accidental movement of the shuttle while personnel are in the water-brake tank. The  preceding  safety  instructions  must  be  strictly followed. Under any conditions when inspection of the water brakes area is undertaken, it is imperative that the control  system  remain  in  a  SAFE  position  (exhaust valve open, grab aft). Malfunctions This  section  provides  operating  personnel  with  a guide  to  assist  in  isolating  and  correcting  causes  of malfunctions. During aircraft launch operations, malfunctions may occur that can be rapidly corrected if the   cause   is   correctly   determined.   In   other   cases, corrective action may require extensive repairs, and it is important  that  operating  personnel  rapidly  isolate  the cause of the malfunction in order to inform the catapult officer if the catapult must be placed out of service. When  a  malfunction  occurs,  the  catapult  must  be put  in  a  SAFE  condition  before  corrective  action  is attempted, to prevent accidental launching of aircraft or injury to personnel. To property correct any malfunction(s) all primary causes  should  be  checked  first  to  quickly  isolate  the malfunction to a specific system. The secondary causes can then be checked to determine which component(s) within the system caused the malfunction. All preoperational and post operational inspection procedures that apply to a specific system or station of the catapult are to be conducted and completed by the person   or   persons   assigned   the   duty.   For   detailed inspection   procedures,   the   ABE   must   consult   the applicable MRCs or technical manuals. 4-66







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