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  2. Martinair Flight 495 - Wikipedia

    en.wikipedia.org/wiki/Martinair_Flight_495

    Martinair Flight 495 was a McDonnell Douglas DC-10 operated by Dutch airline Martinair, that crash-landed in severe weather conditions at Faro Airport, Portugal on 21 December 1992.

  3. Ground proximity warning system - Wikipedia

    en.wikipedia.org/.../Ground_proximity_warning_system

    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 ]

  4. AN/ALQ-221 - Wikipedia

    en.wikipedia.org/wiki/AN/ALQ-221

    AN/ALQ-221 Advanced Defensive System is a radar warning receiver and electronic countermeasures system manufactured by BAE Systems in Nashua, New Hampshire, for use on the U.S. Air Force U-2 Dragonlady reconnaissance aircraft.

  5. Aviation system that caused widespread flight delays traces ...

    www.aol.com/news/aviation-warning-system-crashed...

    The U.S. aviation warning system that crashed for more than an hour Wednesday traces back its origins to ocean-faring ships and has been under continuous Aviation system that caused widespread ...

  6. AN/ALR-67 radar warning receiver - Wikipedia

    en.wikipedia.org/wiki/AN/ALR-67_radar_warning...

    The AN/ALR-67 countermeasures warning and control system is the standard threat warning system for tactical aircraft and was specifically designed for the A-6E/SWIP, AV-8B, F-14B, F-14D and F/A-18. The system detects, identifies and displays radars and radar-guided weapon systems in the C to J frequency range (about 0.5 to 20 GHz).

  7. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    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 ...

  8. Minimum safe altitude warning - Wikipedia

    en.wikipedia.org/wiki/Minimum_Safe_Altitude_Warning

    Minimum safe altitude warning (MSAW) is an automated warning system for air traffic controllers (ATCO). It is a ground-based safety net intended to warn the controller about increased risk of controlled flight into terrain accidents by generating, in a timely manner, an alert of aircraft proximity to terrain or obstacles.

  9. Federal Signal 3T22 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_3T22

    The Federal Signal 3T22 and 2T22 are dual-tone, mechanical outdoor warning sirens made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. Both have a very recognizable design, with a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.