Hi,
lexoncd
The last words to atc apparently from the co pilot were "All right, good night" some say this was rather casual. It was also several minutes after scars was switched off. Was this an attempt by the pilot to draw attention to something going on in the cockpit? Then major altitude changes 43,000 ft to 25,000.
"It was also several minutes after the ACARS was switched off"
Yes and no!
It's a ACARS send
About 10 minutes later it's the last voice com
As you know the gap between each ACARS sending is 30 minutes so .. you can't know precisely if the last voice com was made after or before ACARS switch off