NetJets Inc., formerly Executive Jet Aviation, was founded in 1964 as the first private business jet charter and aircraft management company in the world. The founding members of the board of directors included US Air Force generals Curtis E. LeMay and Paul Tibbets, Washington lawyer and former military pilot Bruce Sundlun, and entertainers and pilots James Stewart and Arthur Godfrey, with retired Air Force Brigadier General Olbert F. "Dick" Lassiter serving as president and chairman of the board.
EJA initially began operations in 1964 with a fleet of ten Learjet 23 aircraft. Bruce Sundlun became EJA president in 1970, and Paul Tibbets became president in 1976. By the late 1970s, EJA was doing business with approximately 250 contract customers, and logging more than three million miles per year.
In 1984, Executive Jet Aviation was purchased by mathematician and former Goldman Sachs executive Richard Santulli who owned a business that leased helicopters to service providers of offshore oil operations. When Santulli became chairman and CEO of the corporation, he closely examined 22 years of pilot logbooks, and began to envision a new economic model where several individuals could own one aircraft.
In 1987, the NetJets program was officially announced becoming the first fractional aircraft ownership format in history. Around the same time, painted on every NetJets US aircraft is a registration ending with QS, symbolizing the concept of selling quarter shares of an aircraft—a feature that is still representative of the NetJets brand today.
NetJets sells fractions of specific aircraft, chosen from several available types at the time of purchase. Owners then have guaranteed access (50–400 hours annually, depending on share size) to that aircraft with as little as four hours' notice. If the owner's aircraft is unavailable for some reason, another aircraft of the same type, or a larger aircraft, will be provided.
Fractional owners pay a monthly maintenance fee and an occupied hourly operating fee. The latter is charged only when an owner or guest is on board, not for ferry flights.
For companies or individuals that require less than the minimum 50 flight hours and the five-year commitment of fractional ownership, they can buy flight hours in 25-hour increments via its Marquis Jet and NetJets jet card programs.
According to wikipedia