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In Case You Missed it

Cooling

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As we saw in last month’s edition of Wind Tunnel, only about one-third of...

Ask the DAR

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Mel Asberry answers readers’ questions on one-off engineering data requirements, how to fill out an AC 20-27G form, and how to test-fly an aircraft in the U.S. Virgin Islands.

Alternative Energies

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Three new aircraft, Synergy, Pipistrel Panthera and Volta Volare, are pushing the innovation envelope with their propulsion systems, performance and fuel economy. By Dean Sigler.

Light Stuff

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Dave Martin looks at the future of ultralight-like SLSA trainers, and what may be in store from the FAA.