TM 1-1510-224-10 *2. Publications  Check  DA  Forms  2408-12,  -13,  -14, and  -18,  DD  Form  365-4,  locally  required  forms and   publications,   and   availability   of   operator's manual (-10) and checklist (-CL). «3.  Oxygen  system  -  Check  that  oxygen  quantity  is sufficient  for  the  entire  mission,  that  crew  masks operate  normally,  and  that  the  diluter  selector  is set at 100%. a. OXYGEN    SUPPLY    PRESSURE     gages Check. b. SUPPLY control lever (green)  ON. c. Diluter control lever - 100% OXYGEN. d. EMERGENCY   control   lever   (red)   Set   to TEST  MASK  position  while  holding  mask directly    away    from    face,    then    return    to NORMAL. e. Oxygen mask Put on and adjust. f. EMERGENCY pressure control lever Set to TEST  MASK  position  and  check  mask  for leaks, then return lever to NORMAL. g. FLOW  indicator  Check.    During  inhalation blinker   appears,   during   exhalation   blinker disappears.  Repeat a minimum of 3 times. h. Oxygen masks Remove and store. *4. Flight controls - Unlock and check. *5. PARKING BRAKE - Set. CAUTION The  elevator  trim  system  shall  not  be forced past the limits which are shown on the PITCH TRIM indicator scale. 6. Elevator trim - Set to 0 (neutral). CAUTION Do not cycle LDG GEAR CONTR handle on the ground. *7. Gear - DN. *8. Keylock switch - ON. *9. Weather radar -  OFF. «10.  Fuel   pumps/crossfeed   operation   Check   as follows: a. FIRE PULL handles Pull. b. STANDBY PUMP switches ON. c. BATTERY switch ON. d. #    1    and    #    2    FUEL    PRESS    warning annunciators - Illuminated. e. FIRE PULL handles In. f. #    1    and    #    2    FUEL    PRESS    warning annunciators Extinguished. g. STANDBY     PUMP     switches     STANDBY PUMP. h. #    1    and    #    2    FUEL    PRESS    warning annunciators Illuminated. i. Crossfeed     Check     system     operation     by activating switch momentarily left then right, noting   that    #   1   and   #   2   FUEL   PRESS warning   annunciators   extinguish   and   that the    FUEL    CROSSFEED     advisory     light illuminates as switch is energized. CAUTION Extend   the   ice   vanes   during   ground operation,   to   minimize   foreign   object damage (FOD) to the engine. 11. Ice vane control switches Check as follows: a. ICE  VANE  POWER  SELECT  switches  (2) STBY. b. ICE VANE CONTROL switches (2) Off. *12. BATTERY switch ON. 13. Lighting   and   anti-ice/deice   systems   Check   as required.      Check   shall   include   position   lights, recognition    lights,    landing/taxi    light,    wing    ice lights,   beacons,   emergency   lights,   pitot   tubes, heated     fuel     vents,     stall     warning     vane,     true airspeed   temperature   probe,   and   interior   lights, then off.  Check ice vanes retracted. 8-2