Threshold Aviation Group based in Chino, California is one of the largest Aircraft Maintenance, Management, Service, and Supp ... ort organizations in Southern California. With more than 150,000 square feet of hangar and office space, Threshold is located on the Chino Airport (KCNO) and adjacent to its 7,000 foot runway. Threshold offers a full range of services to its business jet clients including the following: Executive terminal facilities Full FBO Services including low cost fuel, rental cars, and concierge services Hangar storage capable of accommodating Boeing Business Jets Aircraft maintenance completed by our FAA Approved Part 145 Repair Station Aircraft Completions and refurbishments through our Interior shop with soft goods (upholstery) and wood laminates Aircraft management services including insurance, storage, flight crews and all related aircraft services Aircraft Charter Services Special Mission Aircraft modification and operation with approved flight testing and certification program Aircraft Operations capability on a 24/7 basis read more