737 MAX Flight Crew Operations Manual
Air Systems -
Controls and Indicators
2.10.8
MN-FLT-OH-201
Cabin Altitude Panel
1
CABIN Altimeter (ALT)/Differential Pressure (DIFF PRESS)
Indicator
Inner Scale – indicates cabin altitude in feet.
Note:
The CABIN ALT indicator can show a cabin altitude of less than 0 feet and
reach the upper end of the cabin altitude scale. This can occur under the
following conditions:
• on the ground at airports close to or below sea level.
• in flight when the cabin is pressurized below sea level.
Outer Scale – indicates differential pressure between cabin and ambient in psi.
2
CABIN Rate of CLIMB Indicator
Indicates cabin rate of climb or descent in feet per minute.
DN
UP
2
1
2
3
3
4
0
1
CA
BI
N
CL
I
M
B
10
00
FEET PER
MI
N
5
X 1000 FEET
ALT
CABIN
50
40
35
30
25
20
15
10
5
0
10
9
8
7
6
4
3
2
1
0
OFF & LDG
PRESS DIFF
CUTOUT
HORN
.125 PSI
LIMIT:TAKE-
ALT
DI
F
PR
ES
F
S
P
S
I
.5
.5
FORWARD OVERHEAD PANEL
1
2
3
March 1, 2021
