Boeing 757 Rad Alt - Aural Warnings
Does anyone know what (if any) aural warnings the Boeing 757 Rad Alt had when it entered service in the early 1980s?
I know it later years when the Rad Alt display became alive on the ADI, at 2,500 feet on the descent, some operators had a "Radio Altimeter" aural warning but I am not sure if this was a modification that came with the later introduction of EGPWS.
Many thanks