TM 55-1510-220-CL
7.
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.
8.
Anti-ice and deice system switches - OFF
PNEUMATIC PRESSURE
1.
Power levers - IDLE.
2.
Left bleed air valve switch - PNEU & ENVIRO OFF.
3.
Pneumatic pressure - Check 12 to 20 PSI.
4.
Right pneumatic and environmental switch - PNEU &
ENVIRO OFF Check that L BL AIR FAIL and R BL AIR
FAIL annunciator lights , and L BLAIR OFF and R
BLAIR OFF annunciator lights are illuminated.
5.
Pneumatic pressure - Verify zero.
6.
Left pneumatic and environmental switches - OPEN.
Check that L BL AIR FAIL and R BL AIR FAIL
annunciator lights, and L BL AIR OFF and R BL AIR
OFF annunciator lights are extinguished.
7.
Pneumatic pressure - Verify 12 to 20 PSI.
8.
Right pneumatic and environmental switches - OPEN.
PRESSURIZATION SYSTEM
1.
Cabin door caution light - Check extinguished.
2.
Storm windows - Check closed.
3.
Bleed air valve switches - Check OPEN.
P-10
