Boeing 737 - AUTO FAIL or Unscheduled Pressurization Change

737 Flight Crew Operations Manual
2.4
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D6-27370-4Q8-SJA
2.4
AUTO FAIL
1 Increasing thrust may ensure sufficient air supply
to control cabin altitude.
PT804 - PT817
2 Pressurization mode selector . . . . . . . . . . . STBY
PT804 - PT817
3 CAB ALT indicator . . . . . Set using the cabin/flight
altitude placard
▼ Continued on next page ▼
AUTO FAIL
or
Unscheduled Pressurization Change
AUTO FAIL or Unscheduled Pressurization Change
AUTO
FAIL
May or may not be illuminated
Condition:
One or more of these occur:
•Automatic pressurization mode has failed
•The cabin altitude is uncontrollable.
Objective:
To maintain control of cabin altitude.
March 24, 2017