TM 1-1510-223-10 Change 3          8-21 c.   AUTOFEATHER switch — Hold to TEST (both  AUTOFEATHER annunciators  illu- minated). d.   POWER levers — Retard individually. (1)   At  13%  to  19%  torque  —  Opposite AUTOFEATHER   annunciator   extin- guished, IGN ON annunciator illumi- nated. (2)   At 7% to 13% torque — Both AUTO- FEATHER annunciators extinguished (propeller starts to feather). NOTE The  POWER  lever  may  have  to  be  lifted  and pulled towards the ground fine gate in order to attain the 7% to 13% torque. AUTOFEATHER   annunciators   will   illuminate and extinguish with each fluctuation of torque as the propeller feathers. (3)   Return POWER lever to approximate- ly 25% torque. e.   Repeat  above  procedure  with  other  en- gine. f.   AUTOFEATHER switch — ARM. g.   AUTO IGNITION switches — OFF. 4.   Overspeed  governors  and  rudder  boost  — Check as follows: a.   Deleted. b.   Deleted. c.   Deleted. d.   Deleted. e.   Deleted. f.   Yaw  damper  —  ENGAGE.  Observe  YD ENG annunciator illuminated. g.   PROP GOVERNOR TEST switch — Hold to PROP GOVERNOR TEST position. h.   Left POWER lever — Increase until pro- peller stabilizes at 1540 to 1580 RPM. i.   Release     PROP     GOVERNOR     TEST switch — Observe that propeller RPM in- creases. j.   Continue advancing left POWER lever — At approximately 50% torque differential, YD  ENG  annunciator  should extinguish, and left rudder pedal should start to move forward. Increasing engine power should result  in  increased  rudder  pedal  travel. (Observe torque and TGT limits.) k.   Slowly retard left POWER lever — Rudder pedal   travel   should   decrease   with   de- creasing  power.  At  approximately  50% torque  differential,  YD  ENG  annunciator may flicker as rudder boost system disen- gages. l.   Re-engage yaw damper, and repeat steps g through k with other engine. 5.   Primary governors — Check as follows: a.   POWER levers — Set as 1500 RPM. b.   Exercise propeller — Move to feather det- ent, check propeller RPM 1150 +/-50, then return to HIGH RPM. 6.   Deleted. 7.   Deleted. 8.  Engine anti-ice — Check as follows: a.   ENGINE INLET HEAT SWITCHES (2) — ON. Check #1 and #2 LIP HEAT amber caution advisory annunciator lights illumi- nated. After lip heats warm check that the amber caution advisory lights extinguish and the #1 and #2 LIP HEAT ON green advisory annunciators illuminate. b.   ENGINE INLET HEAT SWITCHES (2) — OFF. Check that the #1 and #2 LIP HEAT ON  green  advisory  annunciators  extin- guish and the #1 and #2 LIP HEAT amber caution advisory lights illuminate. After the lip heat cools check that the amber adviso- ry LIP HEAT LIGHTS have extinguished. 9.  Anti-ice and deice systems — Check as fol- lows: a.   WINDSHIELD   anti-ice   switches   (2)   — NORMAL then HIGH. Check PILOT and COPILOT (individually) for loadmeter rise, then OFF.