Originally Posted by Mark_Stevens
Anyone do an upgrade or know of a good repair shop around Tulsa, OK or close?


Back in 2011, I needed to replace my transponder. Jim Hillabrand recommended Wings Avionics [wingsavionics.com] in Fayetteville, AR. I called and talked to Brady Terry, the shop manager. Very nice and honest guy. He shipped me the replacement unit, I shipped back my old one and a check.

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