FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 9. Aircraft Systems and Components | 3. Emergency Equipment | 9-51. Service Oxygen Cylinders
9/8/98
TABLE 9-5. Table of filling pressures.
Initial Temp
Filling Pressure
(° F)
(psi)
0
1,650
10
1,700
20
1,725
30
1,775
40
1,825
50
1,875
60
1,925
70
1,975
80
2,000
90
2,050
100
2,100
110
2,150
120
2,200
130
2,250
Initial Temperature-Refers to the ambient tem-
perature in the filling room.
Filling Pressure-Refers to the pressure to which
aircraft cylinders should be filled. This table gives
approximations only, and assumes a rise in tem-
perature of approximately 25 °F. due to the heat of
compression. This table also assumes the aircraft
cylinders will be filled as quickly as possible and
that they will only be cooled by ambient air, with no
water bath or other means of cooling being used.
Example: If ambient temperature is 70 °F, fill air-
craft cylinders to approximately 1,975 psi-as close
to this pressure as the gauge may be read. Upon
cooling, cylinders should have approximately
1,850 psi pressure
9-52.9-59. [RESERVED.]
AC 43.13-1B
Par 9-51
Page 9-43 (and 9-44)