AMC2Â ACNS.E.TAWS.010Â Required functions
ED Decision 2013/031/R
In case of descent the TAWS should provide an automatic call out when descending through a predefined altitude (typically 150Â m (500Â ft) above terrain or above the elevation of nearest runway).
For a Class B TAWS in order to compensate for the lack of âexcessive closure rate to terrainâ function the predefined altitude should be 500ft.
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