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Aviation Forum / General / IFR / July 2009Pressure test on a fitted oxygen cylinder
If you have an unpressurised aircraft which has a fitted o2 system, and the cylinder needs the hydrostatic test, who is authorised to do this test? I know an A&P is required to remove/install the cylinder but can any company test it? They would deliver paperwork certifying the test, but they would not be an FAA Repair Station. Thank you for any input. > If you have an unpressurised aircraft which has a fitted o2 system, > and the cylinder needs the hydrostatic test, who is authorised to do [quoted text clipped - 5 lines] > > Thank you for any input. Can't give you an authoritative answer, but here's what I know... The place doing the hydro test should stamp a new date and station number on the cylinder collar and that should satisfy your A&P that the hydro was properly done. Hydro test facilities are regulated by the DOT (I'm assuming you are in the US) not the FAA. > If you have an unpressurised aircraft which has a fitted o2 system, > and the cylinder needs the hydrostatic test, who is authorised to do [quoted text clipped - 5 lines] > > Thank you for any input. I'd contact a Repair Station that is authorized for O2 systems. In the FAA world an authorized repair station can sign off almost anything that belongs in their baliwick. I did a quick search of FAA Repair Stations and Oxygen cylinders and notice O2 systems and cylinders is a specific area some Repair Stations are authorized to re-cert. I'd call or email my nearest big FBO with a shop and ask for Reapair stations for O2 work. You can also search the FAA database of Repair Stations in your area. There may be a non-Repair Station answer to your question, but an appropriate Repair Station is guaranteed to be a solution to this question.  SignatureScott >> If you have an unpressurised aircraft which has a fitted o2 system, >> and the cylinder needs the hydrostatic test, who is authorised to do [quoted text clipped - 16 lines] >There may be a non-Repair Station answer to your question, but an >appropriate Repair Station is guaranteed to be a solution to this question. This aircraft is based outside the USA and an FAA RS is not really an option. I was trying to find references to the FAA regs for this. AIUI, any company that can legally hydrostatically test the cylinder can be used to do it, and an A&P needs to remove/re-install it. Does anyone have a references proving this wrong? > AIUI, any company that can legally hydrostatically test the cylinder > can be used to do it, and an A&P needs to remove/re-install it. Does > anyone have a references proving this wrong? That's my understanding. So your nearest friendly scuba diving shop or welding supply shop can help you. If the plane is N-registered, make sure that the test meets the US requirements. I had my aluminum portable tanks tested at the local fire extinguisher shop, which may be another source to get the job done. > If you have an unpressurised aircraft which has a fitted o2 system, > and the cylinder needs the hydrostatic test, who is authorised to do [quoted text clipped - 5 lines] > > Thank you for any input. I don't think the hydrostatic test is a FAA requirement. IIRC it is a requirement to have the tank filled by an authorized filling station. I had an oxygen tank hydro tested once and found the cheapest place to have it done was at a place that dealt in fire safety equipment (fire extinguishers). The scuba shops seemed to be a bit more expensive, and places that dealt in medical oxygen were more expensive still. However all of these places generally send their tanks out to the same places to have them tested, and the testing process and certification is the same for all. In Europe, it could be completely different so it's best to consult with FBOs that fill oxygen tanks and ask them what their requirements are. > I don't think the hydrostatic test is a FAA requirement. IIRC it is a > requirement to have the tank filled by an authorized filling station. There's no requirement to have it filled by an 'authorized' station in the regs either. The hydrotest is a DOT one and does apply to aircraft (and just about every other way of moving a pressurized gas tank in a vehicle). > > I don't think the hydrostatic test is a FAA requirement. IIRC it is a > > requirement to have the tank filled by an authorized filling station. > > There's no requirement to have it filled by an 'authorized' station in > the > regs either. That's correct. I have mine filled at a welding supply house unless I run out when I'm away from home. Technically the filling station can only fill tanks for which they have a license and aviation, medical, and welding oxygen tanks are all different (even though the oxygen source is all the same). > only fill tanks for which they have a license and aviation, medical, and > welding oxygen tanks are all different (even though the oxygen source is > all the same). The source is the same. But the handling until it's in your bottle is different. > > only fill tanks for which they have a license and aviation, medical, and > > welding oxygen tanks are all different (even though the oxygen source is > > all the same). > > The source is the same. But the handling until it's in your bottle is > different. Nope, the only thing that is different is the paperwork. |
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