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Some planes had one or more bulkhead mounted phone stations with cordless handsets that the passengers could use, instead of the multiple wired handsets. Airfone phone calls were usually quite expensive compared to ground-based telephone calls, costing $3.99 per call and $4.99 per minute in 2006.
An air-to-ground radiotelephone technology demonstration occurred during 1923 Toulouse Air Show at Francazal and Montaudran airports, in France. [2] The first recorded air-to-ground radiotelephone service on a scheduled flight was in 1937 on the Chicago-Seattle route by Northwest Airlines. [3] [failed verification]
An air defense identification zone (ADIZ) has existed since February 10, 2003, [1] around the Baltimore-Washington Metropolitan Area to restrict air traffic near Washington, D.C. The ADIZ was established as a precursor to the US invasion of Iraq in 2003. [2]
The Quiet Zone is an approximate rectangle of land, 107.0 miles (172.2 km) on the north edge, 109.6 miles (176.4 km) on the south edge and 120.9 miles (194.6 km) on the east and west edges, comprising approximately 13,000 square miles (34,000 km 2; 8,300,000 acres).
Less than 1 statute mile (1.6 km) from the end of the runway, the airplane struck the 14th Street Bridge complex, shearing the tops off vehicles stuck in traffic before plunging through the 1-inch-thick (25 mm) ice covering the Potomac River. Rescue responses were greatly hampered by the weather and traffic.
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In aviation, a flight information region (FIR) is a specified region of airspace in which a flight information service and an alerting service (ALRS) are provided. [1] The International Civil Aviation Organization (ICAO) delegates which country is responsible for the operational control of a given FIR. FIRs are the largest regular division of ...
No aircraft may operate in prohibited or restricted areas without valid air defence clearance (ADC) from the Sri Lanka Air Force (SLAF). Prohibited areas are, [17] Colombo City 1 nautical mile (1.9 km) centering the Parliament – Sri Jayawardenapura Kotte; Sapugaskanda Oil Refinery (0.25 nautical miles, 0.46 km) Orugodawatta Petroleum storage ...