budget for aviation and dulles corridor enterprise funds

2012 BUDGETMetropolitan Washington Airports AuthorityGLOSSARYACCRUAL BASIS — An accounting method whereby income and expense items arerecognized as they are earned or incurred, even though they may not have been received oractually paid in cash.AEROTRAIN — The AeroTrain system is a fully automated transit system that will takepassengers between the Main Terminal and the midfield Concourses of Dulles International.The AeroTrain is open.AIR OPERATIONS AREA — The secured areas of each Airport utilized by aircraft, includingrunways, taxiways, and ramps.AIRLINE COST PER ENPLANEMENT — For each Airport, the total annual cost of fees andcharges paid by the Signatory Airlines to the Airports Authority divided by the total signatoryenplanements.AIRPORT COMMUNICATIONS SYSTEM (ACS) — The Airports Authority owns the AirportCommunications System at both Reagan National and Dulles International. The ACSconsists of more than 12,000 lines used by the Airports Authority and numerous airporttenants. In an average month, more than 800,000 calls are processed through the ACS,including more than 180,000 minutes of domestic long distance calls. Tenants are invoicedfor the services they receive, based on a proportionate share of the operating cost of theACS. The tenants are also invoiced for any local or long distance costs they incur. TheAirports Authority budgets in the O&M Program for the net cost of the ACS.AIRPORT IMPROVEMENT PROGRAM (AIP) — See “Federal Grants.”AIR TRAFFIC CONTROL TOWER (ATCT) — A terminal facility which, through the use ofair/ground communications, visual signaling, and other devices, provides air traffic controlservices to airborne aircraft operating in the vicinity of an airport and to aircraft operating onthe airport airfield.AIRPORT USE AGREEMENT AND PREMISES LEASE — The Airports Authority and themajor airlines serving Reagan National and Dulles International entered into an agreementeffective January 1, 1990, that defines their operating and financial relationship for the next25 years. The Airline Agreement includes the concurrence of the Airlines in the CCP andcontinues a close working relationship between the Air Carriers and the Airports. Fees andcharges paid by the airlines are used along with other income from the Airports to service thedebt issued to finance the CCP. The Airline Agreement and Premises Lease is also referredto as the “Airline Agreement.”AIRPORTS — Refers to Ronald Reagan Washington National and Washington DullesInternational Airports, the two Airports operated by the Airports Authority.289