Cobra Systems Inc. (www.cobrasys.com) for image used in Chapter 10

www.free-online-private-pilot-ground-school.com for image used in Chapters 10, 16

DAC International (www.dacint.com) for image used in Chapter 10

Dawson Aircraft Inc. (www.aircraftpartsandsalvage.com) for images used throughout Chapter 10

Mr. Kent Clingaman for image used in Chapter 10

TECNAM (www.tecnam.com) for image used in Chapter 10

TGH Aviation-FAA Instrument Repair Station (www.tghaviation.com) for image used in Chapter 10

The Vintage Aviator Ltd. (www.thevintageaviator.co.nz) for image used in Chapter 10

ACK Technologies Inc. (www.ackavionics.com) for image used in Chapter 11

ADS-B Technologies, LLC (www.ads-b.com) for images used in Chapter 11

Aviation Glossary (www.aviationglossary.com) for image used in Chapter 11

AT&T Archives and History Center for image used in Chapter 11

Electronics International Inc. (www.buy-ei.com) for image used in Chapter 11

Excelitas Technologies (www.excelitas.com) for image used in Chapter 11

Freestate Electronics, Inc. (www.fse-inc.com) for image used in Chapter 11

[AirTrafficAtlanta.com](https://AirTrafficAtlanta.com) for image used in Chapter 11

Western Historic Radio Museum, Virginia City, Nevada (www.radioblvd.com) for image used in Chapter 11

Avidyne Corporation (www.avidyne.com) for image used in Chapter 11

Kintronic Laboratories (www.kintronic.com) for image used in Chapter 11

Mr. Dan Wolfe (www.flyboysalvage.com) for image used in Chapter 11