TM 1-1510-253-CL
a. CONTROLLER Setting, CAWI,
CABIN DUMP and BLEED AIR
Switches -- CHECK
b. MANUAL PRESSURIZATION --
Attempt
c. If unsuccessful -- Descend or Use O2
2. High Cabin Pressure:
a. Attempt manual pressurization.
b. If unsuccessful:
(1) BLEED AIR Switches -- OFF
(2) Altitude -- Descend Below 12000
Ft MSL
(3) Cabin Press below 1 psi -- Cabin
Press Dump
(4) BLEED AIR Switches -- SET As
Required
(for cabin heating / cooling)
3. Excessive Rate Of Pressurization:
a. Attempt manual pressurization.
b. If unsuccessful:
(1) BLEED AIR Switches -- OFF
(2) Isolate faulty source by turning on
one bleed at a time. Leave faulty
bleed air switch off. If unable to
control excessive pressurization
then:
(3) CABIN PRESSURE -- DUMP
E-42