TM 55.1510-220-10
e.
Left power lever Set approximately 22%
torque.
f.
Repeat steps b through d for right engine.
4.
Overspeed governors Check as follows:
a.
Power levers Set approximately 1950 RPM
(both engines).
b.
#1 propeller governor test switch Hold to
TEST position.
c.
#1 propeller RPM 1830 to 1910 Check.
d.
Repeat steps b and c for # 2 engine.
e.
Power levers Set 1800 RPM.
5.
Primary governors Check as follows:
a.
Power levers Set 1800 RPM.
b.
Propeller levers Move aft to detent. Check
that propeller RPM drops to 1600 to 1640
RPM.
c.
Propeller levers HIGH RPM.
6.
Ice vanes Check as follows:
a.
Ice vane switches EXTEND. Verify torque
drop, TGT increase, and illumination of #1
ICE VANE EXTEND and #2 ICE VANE
EXT annunciators.
b.
Ice vane switches RETRACT. Verify return
to original torque and TGT, and that #1 ICE
VANE EXTEND and #2 ICE VANE EXT
annunciators extinguish.
7.
Condition levers HI IDLE.
8.
Power levers IDLE.
9.
Anti-ice and deice systems Check as follows:
a.
Windshield anti-ice switches NORMAL and
HI.
Check
PILOT
and
COPILOT
(individually) for loadmeter rise, then OFF.
b.
Propeller switches INNER and OUTER
(momentarily). Check for loadmeter rise.
c.
Surface deice switch SINGLE CYCLE
AUTO. Check for a drop in pneumatic
pressure and wing deice boot inflation and
after 6 seconds for a second drop in
pneumatic pressure.
d.
Surface deice switch MANUAL. Check that
surface boots inflate, and remain inflated,
then OFF.
e.
Antenna deice switch SINGLE. Check for a
drop in pneumatic pressure and antenna
deice boot inflation.
f.
Antenna deice switch MANUAL. Check that
boots inflate, and remain inflated, then
OFF.
g.
Engine inlet lip heat switches ON. Check
that #1 LIP HEAT ON and and #2 LIP
HEAT ON advisory annunciator lights are
illuminated, and the #1 LIP HEAT and #2
LIP HEAT caution annunciator lights are
extinguished, then OFF.
h.
Anti-ice and deice system switches OFF.
10.
Pneumatic pressure Check as follows:
a.
Left bleed air valve switch PNEU &
ENVIRO OFF.
b.
Pneumatic pressure Check 12 to 20 PSI.
c.
Right pneumatic and environmental switch
PNEU & ENVIRO OFF. Check that L BL
AIR FAIL and R BL AIR FAIL, and L BL AIR
OFF and R BL AIR OFF annunciator lights
are illuminated.
d.
Pneumatic pressure Verify zero.
e.
Left pneumatic and environmental switches
OPEN. Check that L BL AIR FAIL and R
BL AIR FAIL, and L BL AIR OFF and R BL
AIR
OFF
annunciator
lights
are
extinguished.
f.
Pneumatic pressure Verify 12 to 20 PSI.
g.
Right
pneumatic
and
environmental
switches OPEN.
11.
Pressurization system Check as follows:
a.
Cabin
door
caution
light
Check
extinguished.
8-17
