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Old 09-01-2003, 12:43 AM
Lycoming-8 Lycoming-8 is offline
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Join Date: Aug 2002
Location: NE Okla
Posts: 1,104
Plantman.

The ALDA is an altitude compensator located on the top of the (IP) injection pump. It causes the IP to add extra fuel when the turbo causes boost, based on a signal from the intake manifold. Fuel add is supposed to be proportional to the boost level.
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