TM  55-1510-221-10 CAUTION If ignition does not occur within 10 seconds after  moving  condition  lever  to  LOW  IDLE, initiate engine clearing procedure. If for any reason a starting attempt is discontinued, the entire starting sequence must be repeated after allowing the engine to come to a complete stop (5 minute minimum). 3. CONDITION  lever  (after  N₁ RPM  passes  12% minimum) - LOW IDLE. CAUTION NOTE Monitor TGT to avoid a hot start. If there is a rapid rise in TGT, be prepared to abort the start before  limits  are  exceeded.  During  engine  start, the  maximum  allowable  TGT  is  1000°C  for five  seconds.  If  this  limit  is  exceeded,  use ABORT  START  procedure  and  discontinue start. Enter the peak temperature and duration on DA Form 2408-13. For maximum cooling on the ground, turn the bleed  air  valve  switches  to  ENVIRO  OFF position. H * 3.   AC/DC power - Check for: a.   AC frequency - 394 to 406 Hz. b. AC voltage - 104 to 124 VAC. c. DC load - Check. 4. TGT  and  N₁ -   Monitor   (TGT   1000°C maximum, N₁ 52% minimum). 5. 6. Oil pressure - Check (60 PSI minimum). Ignition and engine start switch - OFF, after 50% N₁ 7. 8. Propeller  levers  -  FEATHER. GPU - Disconnect. (Check aircraft external power   and   mission   external   power   light extinguished.) 9. Propeller levers - HIGH RPM. 10.  Aircraft  inverter  switches  -  ON,  check  #1 INVERTER and #2 INVERTER annunciator lights  extinguished. 11.   Generator switches - RESET, then ON. 12.  CONDITION  levers  -  As  required. 8-36.  BEFORE  TAXING. *   1. Brake deice - As required. To activate the brake  deice  system  proceed  as  follows: a.   Bleed air valves - OPEN. b.  CONDITION  levers  -  HI  IDLE. c.  Brake  deice  switch  -  DEICE.  Check BRAKE  DEICE  ON  advisory  annunciator light  illuminated. *   2. Cabin temperature and mode - Set. CAUTION Verify  airflow  is  present  from  aft  cockpit eyeball outlets to insure sufficient cooling for mission  equipment. d.   DC voltage - 27.0 to 28.5 VDC. WARNING Do  not  operate  radar  in  congested  areas.  Injury could result to personnel in close proximity to operating  radar. CAUTION Do not operate the weather radar in an area where  the  nearest  effective  surface  is  50  feet  or less from the antenna reflector. Scanning such surfaces  within  50  feet  of  the  antenna  reflector may  damage  receiver  crystals. *   4. Avionics master switch - ON. 5. Mission panel - Set and checked as required. H 6.  Automatic  flight  control  system  -  Check  as follows: a. Altitude alert. 8-13