what does the airport code dca stand for
Ronald Reagan Washington National Airport
title: Washington Dulles International Airport text: passengers. Dulles was once assigned the airport code DIA, with each letter corresponding to the initials of Dulles International Airport. However, when handwritten, it was often misread as DCA, the code for nearby Ronald Reagan Washington National Airport. It was later revised to IAD to avoid confusion. The airport's terminal complex consists of a main terminal and two midfield terminal buildings: Concourses A/B and C/D. The entire terminal complex has 123 gates and 16 hardstand locations from which passengers can board or disembark using the airport's plane mate vehicles. Conceived in early planning sessions in 1959, Dulles is one of title: IATA airport code text: Thus, Washington D.C. area's three airports all have radically different codes: IAD for Washington–Dulles, DCA for Washington–Reagan (District of Columbia Airport), and BWI for Baltimore (Baltimore–Washington International, formerly BAL). Since HOU is used for William P. Hobby Airport, the new Houston–Intercontinental became IAH. The code BKK was originally assigned to Bangkok–Don Mueang and was later transferred to Suvarnabhumi Airport, while the former adopted DMK. Shanghai–Hongqiao retained the code SHA, while the newer Shanghai–Pudong adopted PVG. The opposite is true for Berlin, the airport Berlin–Tegel uses the code TXL, while its smaller counterpart Berlin–Schönefeld uses SXF; the new Berlin Brandenburg Airport title: Document Content Architecture text: types of documents: Document Content Architecture The Document Content Architecture, or DCA for short, is a standard developed by IBM for text documents in the early 1980s. DCA was used on mainframe and iSeries systems, and formed the basis of DisplayWrite's file format. DCA was later extended as MO:DCA (Mixed Object Document Content Architecture), which added embedded data files, like graphics. The original purpose of DCA was to provide a common document format that could be used across multiple IBM word processing platforms–such as the IBM PC, IBM mainframes, the Displaywriter dedicated word processor, and the IBM 5520 Administrative System. title: Document Content Architecture text: Document Content Architecture The Document Content Architecture, or DCA for short, is a standard developed by IBM for text documents in the early 1980s. DCA was used on mainframe and iSeries systems, and formed the basis of DisplayWrite's file format. DCA was later extended as MO:DCA (Mixed Object Document Content Architecture), which added embedded data files, like graphics. The original purpose of DCA was to provide a common document format that could be used across multiple IBM word processing platforms–such as the IBM PC, IBM mainframes, the Displaywriter dedicated word processor, and the IBM 5520 Administrative System. DCA defined two title: Washington, DC Metropolitan Area Special Flight Rules Area text: Within the ADIZ is an even more sensitive zone designated the "Washington, D.C. Metropolitan Area Flight Restricted Zone" (DC FRZ). The DC FRZ extends approximately around the DCA VOR/DME. Flight within the FRZ is restricted to governmental, certain scheduled commercial and a limited set of waivered flights. Three general aviation airports (known as the "Maryland 3" or the "DC 3") are located inside the DC FRZ: College Park Airport (CGS), Washington Executive/Hyde Field (W32), and Potomac Airport (VKX). Pilots' groups, led by the Aircraft Owners and Pilots Association (AOPA), have argued that the ADIZ is unnecessary and has a harmful