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![]() jcarlyle wrote: George, I'm very surprised. All of the pressure vessels I've ever worked on over the last 30 years that were located inside the USA have had either DOT or ASME certification. I don't have a reference for you at the moment, but I've written a note about this issue to a past president of ASTM to get his input. I'll get back to you with his response. Meanwhile, could you tell me exactly what the stamped ratings on the shell say that you are taking on trust? -John Fellas, Here's the current FAA guidance on the subject: (HBAW 02-01B) http://www.faa.gov/library/manuals/e...300/hbaw/2002/ An excerpt below, but please read the whole bulletin in the link above as this policy should not be taken out of context. Most IA's will not sign off an annual on an aircraft with an out-of-date hydro. "C. Title 49 CFR parts 171 through 180, Hazardous Materials Regulations (HMR), pertains to the retest and inspection of cylinders in transportation in commerce. However, cylinders used as components in aircraft are not considered to be in transportation in commerce when installed in an aircraft. As a result, the retest period for cylinders used as a component of and installed in an aircraft is not subject to the HMR. However, 49 CFR part 180, § 180.205, formerly part 173, § 173.34(e), would apply to a cylinder that is removed from the aircraft and offered for transportation as an article of commerce. In this case, the cylinder must include the appropriate exterior packaging and hazard communication requirements (i.e., shipping papers, marking, and labeling)." Jim |
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