Otto Instrument Service, Inc. provides maintenance, repair and overhaul services to Original Equipment Manufacturers, Foreign and Domestic Commercial Air Transport, Cargo / Freight, Regional, Corporate and Private Aircraft Operators as well as Military and Defense Aircraft Operators around the world.

Otto has capabilities on thousands of part numbers of instruments, accessories, and radio components, and we support components on commercial aircraft manufactured by Boeing, McDonnell Douglas, Airbus, Bombardier, and many others. Otto also supports business and general aviation aircraft such as Beechcraft, Cessna, Gulfstream, Lear, Mooney, and Piper.

Otto holds full class ratings in Mechanical, Electrical, Gyroscopic, and Electronic Instruments, Mechanical, Electrical, and Electronic Accessories, Communications and Navigation Radio components, and Limited Pulse Radio and Airframe ratings. These broad ratings allow us to provide a wide range of component services to our customers.

Otto also provides MRO Integrator Services, helping you reduce the stress and cost of managing multiple component repair suppliers. Our repair management team will take on the tasks of locating and qualifying suppliers, negotiating prices and turn-around times, and managing the suppliers throughout the repair cycle so that you can focus on your core business.


Otto Instrument Service, Inc. can help keep you up in the air by developing and obtaining FAA Designated Engineering Representative (RS-DER) approval for repair specifications for components and parts. Otto will work with you to create a DER repair specification that will not only ensure the part is serviceable, but also minimize any impact to the unit’s existing Instructions for Continued Airworthiness (ICAs), and thereby help you keep maintenance costs down.

If you think you have a component that could benefit from a specialized DER Repair Specification, contact your Otto sales representative for more information on how we can assist you.


Otto provides you with component MRO services for an extensive range of part numbers, within many ATA Chapters, that are used on a wide variety of aircraft families. You may filter on any combination of the columns below to search for a single part number or to view a customized list of capabilities to fulfill your needs.

If you are unable to find a needed component/harness within our MRO Capability listing, please contact: