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Ground-proximity warning systems use ___________ altimeters.(a) Radio(b) Sound(c) Radar(d) PressureThis question was posed to me in a national level competition.Origin of the question is Fundamentals in division Aircraft Fundamentals of Aircraft Maintenance

Answer»

Right choice is (c) Radar

Best explanation: The GROUND-proximity warning systems USE radar altimeters. The GPWS is USED to avoid the aircraft being UNINTENTIONALLY flown into the ground or an obstacle. It improves FLIGHT safety.



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