- Flugschule Grenchen
- Main business：PPL - Private Pilot Licence, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating, Multi Engine Rating
- Switzerland [Unverified ]
- Flugschule Eichenberger AG
- Main business：PPL - Private Pilot Licence, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating
- Switzerland [Unverified ]
- EFOS Flight-Charter AG Airtaxi
- Main business：PPL - Private Pilot Licence, Night Rating, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating, Multi Engine Rating, Multi Engine IFR/IR, Multi Engine Sim Training
- Switzerland [Unverified ]
- Chicago Piper
- Main business：aircrafts maintenance, aircraft avionics Services
- USA [Unverified ]
- Avilu SA
- Main business：PPL - Private Pilot Licence, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating, Multi Engine Rating, Multi Engine IFR/IR
- Switzerland [Unverified ]
- PEI-Genesis.
- Main business：aircraft manufactures
- USA [Unverified ]
- Alp-Air Bern AG
- Main business：PPL - Private Pilot Licence, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating, Multi Engine Rating, Multi Engine IFR/IR
- Switzerland [Unverified ]
- Chandler Aviation
- Main business：aircrafts maintenance, aircraft avionics Services
- USA [Unverified ]
- CFLY Aviation
- Main business：aircrafts management
- USA [Unverified ]
- Air-Espace Flight Academy
- Main business：PPL - Private Pilot Licence, CPL - Commercial Pilot Licence, Flight Instructor, Instrument Rating, Multi Engine Rating, Multi Engine IFR/IR
- Switzerland [Unverified ]
