Otto Instruments

  • Ontario, CA, USA

MRO Services

Otto specializes in the maintenance, repair and overhaul of a diversified range of instruments, electronics, avionics, and wire harness assemblies for foreign and domestic:

  • Original Equipment Manufacturers (OEM)
  • Commercial Air Transport Operators
  • Cargo / Freight Operators
  • Regional / Corporate Operators


  • Private Aircraft Operators
  • Rotor-Wing Operators
  • Military Operators
  • Defense Aircraft Operators

Our facilities in Ontario and Sun Valley California are FAA / EASA authorized and are ISO9001 / AS9100 certified. Our facilities operate as fully licensed and factory authorized Honeywell repair centers with capabilities that encompass Commercial and Military Avionics, Autopilot, Air Data, and Flight Guidance Systems.