- AAR Aircraft Services Rockford Rockford, Illinois
- Aerotek Design Labs, LLC Plainfield, Illinois
- Astronics Connectivity Systems & Certification COR Waukegan, Illinois
- Bohm'S Aviation LLC Pekin, Illinois
- BVR Technologies Co. Rockford, Illinois
- Byerly Aviation Peoria, Illinois · 大型飞机
- CC Industries Inc Wheeling, Illinois
- Chicago Executive Service Center, LLC Wheeling, Illinois
- Chicago Jet Group, LLC Sugar Grove, Illinois · 大型飞机
- CMC Electronics Flight Visions Sugar Grove, Illinois
- Deere & Company Aviation Department Milan, Illinois
- Dupage Aerospace Corporation West Chicago, Illinois · 大型飞机
- Eclipse Aerospace Inc Sugar Grove, Illinois
- Elliott Aviation Milan, Illinois · 大型飞机
- Emery Air, Inc. Rockford, Illinois · 大型飞机
- Finefield Aviation Inc Lake in the Hills, Illinois
- Flying High LLC Naperville, Illinois
- General Aircraft Maintenance Huntley, Illinois
- Gulfstream Aerospace Services Cahokia Heights, Illinois · 大型飞机
- Intelsat Inflight LLC Itasca, Illinois
- Intelsat Inflight LLC Itasca, Illinois
- J A Air Center Sugar Grove, Illinois · 大型飞机
- JEN-Air LLC Chicago, Illinois
- Jet Air Inc Galesburg, Illinois · 大型飞机
- Midwest Avionics LLC Decatur, Illinois
- Mobile Avionics Technologies, Inc Lake in the Hills, Illinois
- Parks Aviation Holdings, LLC. Sauget, Illinois
- Poplar Grove Airmotive Inc Poplar Grove, Illinois
- Quad City Aviation & Instruments Cambridge, Illinois
- Quality Aircraft Testing and Repair LLC Huntley, Illinois
- Radio Ranch, Inc. DBA Avionics Place, Inc. Rockford, Illinois
- Revv Aviation Sugar Grove, Illinois
- SRT Flightline Mount Vernon, Illinois
- Standardaero Business Aviation Services, L.L.C. Springfield, Illinois · 大型飞机
- State of Illinois DOT Division of Aeronautics Springfield, Illinois
- Synergy Flight Center LLC Bloomington, Illinois · 大型飞机
- Temp Aircraft LLC Taylorville, Illinois
- The Flightstar Corporation Savoy, Illinois · 大型飞机
- Waukegan Avionics Waukegan, Illinois
- West Star Aviation Wheeling, Illinois · 大型飞机
- West Star Aviation East Alton, Illinois
- Win Aviation Inc. DBA Dekalb Avionics, LLC Dekalb, Illinois
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