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What is a blowdown bottle and what is the purpose of an x-ray?

April 26, 2017blowdown bottle purpose X-ray

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What is a blowdown bottle and what is the purpose of an x-ray?

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A blowdown bottle is a highly pressurized cylinder containing nitrogen which is used to force open doors or to bring down landing gear. The x-ray is necessary to check for cracks and/or corrosion inside the cylinder. It is typically due in the 9th and 12th year from the DOM of the unit.