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How do cruise speeds change with altitude (standard piston prop)

Ignoring all other factors (winds, time to climb, practical considerations like O2, etc…), how can you relate the maximum cruise speed to the cruise altitude for a normally aspirated (non-turbo),...

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Why doesn’t the governor correct for RPM drop during a magneto check?

Why doesn’t the governor correct for RPM drop during a magneto check?  single engine constant speed I’m searching for more of a explanation than a one sentence answer, however any feedback is...

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“Best forward speed until 5 miles” from where?

When flying an ILS approach the approach controller requests “maintain maximum forward speed until 5 miles out.”  What does that mean? Five miles from where?  The ILS DME? ( FAF at 6 miles… so a mile...

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