TM 55-1510-221-CL
7.
Engine inlet lip heat switches - ON. Check that #1 LIP HEAT ON 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.
RADOME anti-ice switch ON. Check that RADOME HEAT annunciator is illuminated, then OFF.
PNEUMATIC PRESSURE
1.
Left bleed air valve switch - PNEU & ENVIRO OFF.
2.
Pneumatic pressure - Check 12 to 20 PSI.
3.
Right pneumatic and environmental switch - PNEU & ENVIRO OFF. 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 illuminated.
4.
Pneumatic pressure Verify zero.
5.
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.
6.
Pneumatic pressure - Verify 12 to 20 PSI.
7.
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.
4.
Cabin altitude - Set 500 feet lower than airfield elevation.
C2 P-10
