APU suckin' sand?Mechanics, repeated Black Hawk Black Hawk (born 1767, Sauk Sautenuk, Va.—died Oct. 3, 1838, village on the Des Moines River, Iowa, U.S.) Sauk Indian leader. Long antagonistic to whites, Black Hawk was driven into Iowa from Illinois in 1831. engine start-ups suck air into the APU APU Azusa Pacific University APU Auxiliary Power Unit APU Alaska Pacific University APU Asia Pacific University (Japan) APU American Public University APU Anglia Polytechnic University (Chelmsford) . Unfortunately desert sand gets in the mix, clogs the APU and causes the engine control valve A device that modulates the flow of fluid in a conduit in response to a signal from a process measurement control system. to stick open. When that happens, the APU does not shut down, and the No. 1 and No. 2 engine starter valves don't close properly. It continues sucking air and sand. Then the starter light comes on in the cockpit, and an engine shutdown is the usual result. HERE'S A SIMPLE FIX TO REDUCE ENGINE START UP PROBLEMS ... Open all aircraft doors, cover the center console Center console may refer to:
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