737 Cabin Press Panel Flashcards
Cabin Press Panel - AUTO FAIL

AUTO FAIL
Illuminates when active cabin pressure controller (CPC) fails.
System changes press. control to back up (Alternate) CPC.
Cabin Press Panel - MANUAL

Pressurization system is in MANUAL mode.
Cabin Press Panel - OFF SCHED DESCENT

Illuminates if the airplane descends prior to reaching within .25psi of FLT ALT selected.
Cabin Press - Align Light

Pressurization system is operating in alternate mode.
If illuminated with AUTO FAIL light - indicates that a single controller failre and automatic transfer occured.
Zone Temp

Cabin Temp Controller (CTC) detects a fault with the
CONT CAB trim air supply.
There is an entire host of non-normal faults
Aft Overhead PASS OXY

When the yellow rubber jungle deploys.