You don't want to be in mid-flight when you discover a Nav/Comm or DME/Transponder unit is not functioning properly. That would be like going on a camping trip and forgetting to bring a bottle opener for the beer. Actually, it would be a lot more serious than that. This is why we carry important parts for testing equipment from Aeroflex Incorporated. Aeroflex Test Solutions specialize in test and measurement instrumentation for defense, aerospace, wireless mobile and broadband communications industries. You'll find key components such as power cords, antennas and coax for their IFR4000 Nav/Comm flightline test set and the IFR Aeroflex ATC-600A DME/Transponder test set. SkyGeek.com can't be beat for replacement parts and component parts for your most vital aircraft equipment. If you have any questions about compatibility issues or need to find a particular part number, give our customer service geeks a call.