hydrostatic testing guide

How to Read Hydro Test Date Markings

 I3

6            14

07

                 6 = Month

                14 = Year 

        “I307” = Requalification ID

How to Read Manufacture Date Markings

8 X 12

                 8 = Month

                X = Mfg. Symbol or “-” 

               12 = Year

How to Read DOT Cylinder Specifications

DOT XXX

Specification or Special Permit Number

1850

Service Pressure

Hydrostatic Testing Intervals for Aviation Cylinders – Oxygen & Pneumatic

 DOT Spec Test interval  life limit
 DOT-3AA  5 Years  N/A
 DOT-3AL  5 Years  N/A
 DOT-3HT  3 Years  24 Years
 DOT-SP 8162*  5 Years  15 Years
 DOT-SP 10915*  5 Years   15 Years
DOT-SP 10945*  5 Years   15 Years
 DOT-SP 11194*  5 Years   15 Years

 

Hydrostatic Testing Intervals for Aviation Fire Bottles

 DOT Spec Test interval  life limit
DOT-4D  5 Years  N/A
DOT-4DA  5 Years  N/A
DOT-4DS  5 Years  N/A
DOT-SP 6071*  5 Years  N/A
DOT-SP 7945*  5 Years  N/A
DOT-SP 8495*  5 Years  N/A
DOT-SP 10440*  5 Years  N/A

*DOT-E changed to DOT-SP after December 2005