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December 2016
What’s inside …

Features
20 Power Flow Systems Review: How to Exploit your Engine’s Untapped
Potential
By Jim Cavanagh

28 Get the Aviation Gift You REALLY Want

17 Holiday Gift Ideas for the Practical Pilot
By Scott Sherer

Columns
10 Avionics
Active Avoidance:
Is onboard WX and traffic BETTER than ADS-B?
By Bob Hart

38 Featured Plane
The Cessna 175 Skylark: Too Much, But Not Enough
By Bill Cox

46 Tips & Tales from the Left Seat
What Instrument Pilots Need to Know about IFR Alternates
By Joel Turpin

58 Sky Talk
Undervalued Value
By Scott “Sky” Smith