Avionics
FAA Warns about Muting TAWS Aural Alerts
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Since the advent of terrain avoidance and warning systems (TAWS) installations in jets starting in the 1970s, instances of controlled flight into terrain (CFIT) accidents worldwide by this segment have declined significantly, but TAWS aural alerts can become a nuisance or a distraction to pilots when flying at altitudes below the alerting threshold. This often results in pilots deciding to mute these alerts, which the FAA cautions against doing in newly released Information for Operators (InFo) 23003.

“Inhibiting [TAWS] systems and ignoring warnings, combined with deteriorating weather conditions leading to loss of visual surface reference and situational awareness, has been found to be the cause of some CFIT accidents,” the FAA says in the communication.

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