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Something else to check: the hydraulic accumulator sits under the floor in the tunnel between the pilot seats. It’s normally charged with 500psi nitrogen, and it helps keep pressure on the power pack. If it looses charge, you’ll get drooping doors after the plane sits for a week or so, and when you turn on master power the pump will activate and tighten up the doors closed. The accumulator helps the powerpack keep its “prime.”
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