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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 13–15 nmi (15–17 mi; 24–28 km) around the DCA VOR/DME. Flight within the FRZ is restricted to governmental, certain scheduled commercial and a limited set of waivered flights.
A ground proximity warning system (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. The United States Federal Aviation Administration (FAA) defines GPWS as a type of terrain awareness and warning system (TAWS). [ 1 ]
A piece of the wreckage of Air New Zealand Flight 901, which crashed in Antarctica in 1979, despite being equipped with a GPWS.All 257 people on the plane died. Beginning in the early 1970s, a number of studies looked at the occurrence of CFIT accidents, where a properly functioning airplane under the control of a fully qualified and certificated crew is flown into terrain (or water or ...
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A voice warning system is a system designed to alert the crew of ... into McDonnell Douglas DC-9, ... F-16 Fighting Falcon and Boeing AH-64 Apache helicopter. [2]
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Until 1996, the Metropolitan Police Department (MPDC) operated eight helicopters, including three MD-500s and five Bell OH-58s. [5] The MPDC had heliports in the 2nd, 3rd, and 5th police districts. [1] The helicopters were sold after budget cuts; the MPDC used National Park Service helicopters as needed.
The Common Missile Warning System, or CMWS, consists of missile warning sensors operating in the solar-blind ultra-violet wavelengths capable of detecting incoming missile threats and an electronic control unit that informs the aircraft crew of the threat, automatically triggering flare/chaff countermeasures.