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Dave Holmgren

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Error Chain

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Expectations-You don't know what you don't know. By Dave Holmgren.

In Case You Missed It

Sikorsky S-38 Project

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Building a 55%-scale, amphibious twin-engine flying boat seems like an ambitious project, and it is. But this former WW-II B-25 commander with four homebuilt aircraft already under his belt tackled it anyway. By Rick Lindstrom.

Aero ‘lectrics

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Call me a taxi (light).

Wind Tunnel

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Recently, there has been increasing interest in the efficiency of all vehicles, including airplanes. Designers are seeking to make airplanes that perform better and burn less fuel. Barnaby Wainfan takes a close look at the aerodynamics and mathematics behind this deceptively complex process.

Hamming It Up

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Amateur radio enthusiast Chuck Deiterich explains how pilots can use the Automatic Packet Reporting System (APRS) to track their flights and stay in touch with loved ones for a modest investment.