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AAR Corp. is an American provider of aircraft maintenance services to commercial and government customers worldwide. The company is headquartered in Wood Dale, Illinois , a Chicago suburb. The company employs about 6,000 people, operating in about 30 different countries.
The airport was the only airport to use "World" in its designation. Although Will Rogers offers U.S. Customs and Border Protection (CBP) services for customs and immigration, there are currently no scheduled international flights. OKC Will Rogers International Airport is the busiest commercial airport in the state of Oklahoma.
The AAR is headquartered in Washington, D.C., not far from the Capitol.Its information technology subsidiary, Railinc, is based in Cary, North Carolina.Railinc IT systems and information services, including the Umler system, the Interline Settlement System and Embargoes system are an integral part of the North American rail infrastructure.
AAR: Association of American Railroads: AB: Akron Barberton Cluster Railway: ABB: Akron and Barberton Belt Railroad: ABCK: Alaska British Columbia Transportation Company: ABEC: Aberdeen Electric Company: ABL: Alameda Belt Line: ABM: Texas and Pacific Railway → Missouri Pacific Railroad: ABN: Alabama Northern Railway → Ashland Railway: ABPR
The main notations are the Whyte notation (based on counting the wheels), the AAR wheel arrangement notation (based on counting either the axles or the bogies), and the UIC classification of locomotive axle arrangements (based on counting either the axles or the bogies).
The ARA became the Association of American Railroads (AAR) in 1934; the Signal Division was renamed the Signal Section and the Telegraph and Telephone was renamed the Communications Section. The two sections merged in 1961 to become the Communications and Signal Division of the AAR, which has now been merged into AREMA.
As part of the AAR's adoption of a standard based on Amtech technology, AAR required that Amtech license that technology. At the time of the AAR's 1991 mandate, six vendors sold AEI site equipment. Those vendors were US&S, Safetran, Harmon, VideoMasters, CCTC International in partnership with IBM, and Southern Technologies. [1]
The initial program was the evaluation of technologies that could be used for AAR. The key new concept is the use of precision GPS. The AAR program has since held several flight tests. The important factors were the software and communication systems that kept the aircraft at the proper altitude and speed. [citation needed]