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Aircraft Designs, Inc.

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In Case You Missed it

Navigate the Glass Transition

Learning to use an EFIS. By Katie Bosman Krotje.

IFR GPS Buyer’s Guide: Avidyne and Garmin

Selecting a GPS for your project has never been easy, even in the early...

Dry Tappet Clearance

A flat (standard) tappet disassembled into its various parts. Note that the tappet...

Engine Beat

There's a lot to know about aircraft oil: what to use, when to use it, when to change it. Steve Ells sheds some light on this essential fluid.