737 MAX Flight Crew Operations Manual
Air Systems -
Controls and Indicators
MN-FLT-OH-201
2.10.9
3
Altitude (ALT) HORN CUTOUT Switch
Push –
• cuts out intermittent cabin altitude warning horn
• altitude warning horn sounds when cabin exceeds 10,000 feet altitude.
Cabin Pressurization Panel
1
AUTO FAIL Light
Illuminated (amber) – automatic pressurization system failure detected:
• indicates a single controller failure when ALTN light is also illuminated
• indicates a dual controller failure when illuminated alone.
2
OFF Schedule (SCHED) DESCENT Light
Illuminated (amber) – airplane descended before reaching the planned cruise
altitude set in the FLT ALT indicator.
E
V
L
A
V
MANUAL
AUTO
FLT ALT
ALTN
MAN
E
S
L
C
N
E
P
AUTO
O
O
LAND ALT
FL260
FL320
FL410
8000
6000
4000
FL220
LAND ALT
CAB ALT
2000
<FL160
AUTO
FAIL
OFF SCHED
DESCENT
ALTN
MANUAL
FLT ALT
FORWARD OVERHEAD PANEL
1
2
3
4
5
6
12
11
10
9
8
7
March 1, 2021
