An extract on #hubs_united
The Bookajet fleet consists of the following aircraft (at August 2017)
1 Bombardier Global 5000
1 Embraer Legacy 650
1 Embraer Legacy 600
1 Cessna Citation Sovereign
1 Cessna Citation CJ2+
1 Beechcraft Premier I
Scope clauses place restrictions on how many and what size of aircraft a regional airline may operate. Some holding companies operate a large number of individual airlines, with each airline's fleet specifically tuned to the scope clause of that airline's contracted major carrier.
Scope clauses have a major influence on manufacturers of regional aircraft. Manufacturers will create airplanes specifically tuned to the scope clauses of most airlines. For this reason and others, regional aircraft tend to be manufactured in families, and competing regional aircraft will often have identical seating capacity.
Scope clauses are supported as a means of saving union jobs. Additionally, major airline pilots are usually higher paid than regional pilots, and there is a perceived safety advantage in favor of major airlines. Criticism of scope clauses centers on the limits they place on the regional airlines they target. They are seen as a way of artificially maintaining the pay of major airline pilots when regional pilots will in theory fly the same size airplanes for less pay.
UCH has major operations at ChicagoO'Hare, Denver, Guam, HoustonIntercontinental, Los Angeles, Newark (New Jersey), San Francisco, TokyoNarita and WashingtonDulles. Additionally, UCH's United is the largest U.S. carrier to the Peoples Republic of China and maintains a large operation throughout Asia.
UCH uses Continental's operating certificate and United's repair station certificate, having been approved by the FAA on November 30, 2011.