US aviation regulator warns of mid-air collision risk if Garmin TCAS boxes are not updated

American aviation regulators have ordered private jet operators to install software updates for Garmin collision avoidance units after multiple reports of false alarms – raising the risk of a mid-air crash. The affected Garmin products, its GTS 8000 series, generated seven false Traffic Collision Avoidance System (TCAS) warnings, said the US Federal Aviation Administration (FAA) in a formal Airworthiness Directive (AD) published [PDF] earlier this month.

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