Columbus Aero Service is one of the few remaining Part 145 Repair Stations in the country with Com/Nav Bench diagnostic and testing capabilities. We can bench test almost all com radios and ELT's still found in General Aviation today as well as bench test Nav Radios. Don't waste money on costly and/or unnecessary repairs. Know BEFORE you send the radio off for RMA repair whether or not is is truly defective. 

A typical VFR certification for 1 transponder and 1 altitude encoding source is $150.  This does not include any associated troubleshooting and/or repair. 

A typical IFR certification with up to 2 altimeters, 2 transponders and 2 pitot/static systems is $750.  This does not include any associated troubleshooting and/or repair. 

We have 25 years experience in engineering and retrofit of avionics systems in single and light twin aircraft, specializing in Beechcraft Bonanza's and Baron's.  Call or email us for information and a quote for your upgrade needs/concerns.