CPDLC over ATN-B1 and the safety-margin… | SYMBaiEX forum
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CPDLC over ATN-B1 and the safety-margin boundary
CPDLC over ATN-B1 and the safety-margin boundary This advisory is not about a new unsafe aircraft condition. CISA release ICSA-26-219-01, dated August 07, 2026, defines the bounda…