A BA insider claimed there were 'no reported underlying health conditions' in both the crew members who died.
Speaking of the double-death blow, a source told The Sun said colleagues were in 'shock and disbelief'.
'It has been a traumatic festive period for BA’s flying team. Everyone is deeply upset,' they said.
Paying tribute, British Airways said the company's thoughts were with the families of the fallen colleagues.
An official cause of death for both crew members has yet to be determined.
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