Hello
I read in an update on the investigation by the BEA :
The last contact with Brazilian ATC occurred at 1 h 35 min 15 UTC, at the edge of radar range: there was nothing amiss at that time. At 2 h 01 UTC, the crew tried in vain for the third time to connect to the ADS-C system of Dakar ATC. This failure resulted in an incorrect transcription by the Dakar controller of the airplane’s registration supplied by the Brazilian ATC.
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source)
I understand that such tentative to connect ADS-C requires a crew action. Is that correct ?
If so, we can assume that (part of) the flight crew was conscient & proactive
9 minutes before the first ACARS message.
How much time before entering a cloud cell is the said cell visible on a weather radar ?