Cirrus SR22 Pilot's Operating Handbook And Flight Manual page 320

Section 9
Supplements
Number of
System
Persons
Typical
Using O
(Liters)
XCP-180
(134)
XCP-415
(371)
XCP-682
(609)
Durations assume typical flow rate of 1.0 liter/minute at 10,000 feet pressure altitude.
6 of 6
OXYGEN DURATION - HOURS
Fully Charged System
(1800 psig at 70° F)
10,000
2
1 2.23
2 1.12
3 0.74
1 6.18
2 3.09
3 2.06
1 10.15
2 5.08
3 3.38
Figure - 2
Oxygen Duration
Altitude ~ Feet
15,000 18,000
1.49 1.24
0.75 0.62
0.50 0.41
4.12 3.43
2.06 1.71
1.37 1.14
6.77 5.64
3.39 2.82
2.26 1.88
Revision 02: 01-06-10
Cirrus Design
SR22 / SR22T
25,000
0.89
0.45
0.30
2.47
1.24
0.82
4.06
2.03
1.35
P/N 13772-109