ED Decision 2025/010/R
AUDIO AND VISUAL WARNING
(a) The audio warning should be a voice warning. The voice warning alert should be distinguishable from other warnings and should contain a clear and concise voice message. The height at which the audio warning is triggered should be such as to provide adequate time for the PIC to take corrective action. The voice warning should be triggered only whilst descending through the preset datum height and be inhibited whilst ascending.
(b) The visual warning should require minimal interpretation by the PIC for both an instantaneous impression of absolute height and the rate of change of height.
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