Several years ago, something jarring and potentially dangerous was happening to airliners on the way into Oakland, Calif. Pilots letting down through the mountains en route to Oakland International Airport were receiving terrain awareness and warning system (TAWS) alerts in an area where there were no actual terrain hazards. The FAA learned of the “nuisance alerts” at an InfoShare meeting, a twice-annual closed-door gathering of more than 600 pilots, airline executives, government and ...


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