Who was PF?
A number of news articles have stated that the PF was the relief pilot, who was the youngest of the crew, had the least amount of experience on type (800 hrs), and the least total flying time. If that is true, and with the captain going for rest, that would leave the FO as PNF. The FO had the most time on type of all the crew (4500 hrs).
None of the BEA reports have stated who was flying at the time of the upset. Perhaps the media obtained the information as a result of a leak. However, this arrangement seems odd to me.
Can anyone familiar with how work would be assigned on trans-ocean flights comment on whether this would be a typical assignment, given that they were about to fly into the ITCZ?