Working well under pressure:

MacDonald-Miller recently refurbished two fuselage air manifolds for The Boeing Company. The existing refurbished manifolds provide full scale fatigue testing for Boeing’s 777-200 and 787-8 line of aircraft manufactured in Washington State. Each manifold supplies pressured air to aircraft fuselage that goes through a pressurization / depressurization cycle once per flight. The air will be cycled at least three times the number of cycles an airframe will normally be subject to during its designed service life. MacMiller was also contracted to provide two extensions to these manifolds to accommodate the full-scale fatigue testing for the 777-9 aircraft that will undergo the same fatigue testing. A full test cycle (including the air pressurization / depressurization cycle) will last from a few minutes to a couple hours depending on flight time.

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