TM  55-1510-221-10 11.  Deleted. 12. Mission panel switches and circuit breakers - set and OFF. 13.  Pressurization  controls  -  Set. 14.   Subpanels - Check and set as follows: a b. c. d. Fire protection test switch - OFF. Landing,  taxi,  and  recognition  lights  - OFF. Landing gear control switch - Recheck DN. Cabin lights - As Required. 15.   Pilot’s static air source - NORMAL. NOTE Do  not  use  alternate  static  source  during takeoff and landing except in an emergency. Pilot’s instruments will show a variation in airspeed  and  altitude. 16. Pilot’s and copilot’s audio control panels - As required. 17.  Deleted. H 18. Fuel pumps/crossfeed operation - Check as a  . b . c  . d . e. f. a . b. g. h. i. Fire pull handles - Pull. Standby fuel pump switches - On. Battery switch - ON. #1  fuel  pressure  and  #2  fuel  pressure warning lights - Illuminated Fire pull handles - In. #l fuel press and #2 fuel press warning annunciator  lights  -  Extinguished. Standby fuel pump switches - Off. #1  fuel  pressure  and  #2  fuel  pressure warning lights - Illuminated. Crossfeed -   check.   Check   system operation  by activating switch momentarily  left  then  right,  noting  that  #1 FUEL  PRESS  and  #2  FUEL  PRESS warning annunciator lights extinguish and that the FUEL CROSSPEED advisory annunciator light illuminates as switch is energized. 19.   AC and DC GPU - As required. 8-10  Change  4 20.   External power advisory annunicator lights - As required. (Aircraft EXTERNAL POWER and  mission  EXT  DC  PWR  ON  annunciator lights  illuminated.) 21. H  22. DC power - Check. (22 VDC minimum for battery, 28 maximum for GPU starts). Annunciator panels - Test as required. a MASTER CAUTION, MASTER WARNING, #1 FUEL PRESS, #2 FUEL PRESS, GEAR DN, L BL AIR FAIL, R BL AIR FAIL, INST AC, #1 DC GEN. #1 INVERTER, #1 NO FUEL XFR, #2 NO FUEL XFR, #2 INVERTER, #2 DC GEN, -  Check  illuminated. b.   ANNUNCIATOR TEST switch - Press and  hold.  Check  that  the  annunciator panels, FIRE PULL handle ligh beacon  lights,  ANT  Azimuth ts,   marker, indicator, MASTER   CAUTION   and   MASTER WARNING  lights  are  illuminated.  Release switch and check that all lights except those in step (1) are extinguished. c.    MASTER   CAUTION   and   MASTER WARNING lights - Press. Check that both lights  extinguish. H  23.   Stall  and  gear  warning  system  -  Check  as follows: a. STALL WARN TEST switch - TEST. Check that warning horn sounds. b.  LDG  GEAR  WARN  TEST  switch  - TEST. Check that waming horn sounds and that the LDG GEAR CONTR handle warning lights (2) illuminate. H 24.   Fire Protection system - Check as follows: Fire   Detector   Test   switch   -   Rotate counterclockwise to check three DETR positions.  FIRE  PULL  handles  should Illuminate  in each   position. Reset MASTER  WARNING  in  each  position. Fire   Detector   Test   switch   -   Rotate counterclockwise to check two EXTGH positions.  SQUIB  OK  light,  associated  #1 EXTGH DISCH and #2 EXTGH DISCH annunciator  caution  light  and  MASTER CAUTION  LIGHT  should  illuminate  in each  position. 25. INS - Align as required. 8-30.  *  FIRST  ENGINE  START  (BATTERY START).