Pilot's Operating Handbook
Section 5
Performance
Edition 1 - January 15, 2018
Rev. 3
Page 5.4.1
5.4 - Cabin pressurization envelope
● NOTE ●
The cabin pressurization envelope below characterizes the cabin altitude that
could be sustained by the fuselage at different flight levels. The curve shows
the minimum cabin altitude as a function of flight level, corresponding to the
maximum differential pressure. The maximum differential pressure is limited by
the pressurization system protection function.
●
Figure 5.4.1 - Cabin pressurization envelope
260240220180140 160 200
280
300
1000
2000
3000
4000
5000
6000
7000
8000
Cabin
altitude
(feet)
Pressurization useful
envelope
9350 ft cabin
Δ
P= 6.2 PSI max
9000
310
Flight
level
(FL)
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