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## Mountain Wave Activity (MWA) Encounters −  General 

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## NOTE − 

MWA encounters do not necessarily result in altitude deviations on the order of 200 feet. The guidance below is intended to address less significant MWA encounters. 

## Wake Turbulence Encounters 

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## “Unable RVSM Due Equipment” Failure of Automatic Altitude Control System, Altitude Alerter or All Primary Altimeters 

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## One Primary Altimeter Remains Operational 

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