The FARs are a bit different to the JARs in this respect.
"When airline crews are flying long sectors with relief pilots on board, does each member of the three or four man crew log the entire flight time in their logbook? Or do they only log the time they are actually at the controls?
What about the captain? Often he is PIC for the whole flight whether he is in his seat or not, does he claim the total flight time?"
Under JAR, the designated commander of the aircraft may log PIC for the entire flight time, including periods of rest (he/she is still the legal
commander even at this time).
The designated co-pilot may log P2
for the time he/she spends performing co-pilot duties in a pilot seat. He/she may log as PIC the time spent acting as PIC and subsituting for the designated commander whilse he/she is on rest. He/she may not log as flight time any time not spent at a pilots seat.
A cruise relief pilot may log PIC for the time spent occupying a pilots seat as a relief for the designated commander, and may log co-pilot as the time spent occupying a pilots seat acting as relief for a co-pilot. Again no flight time can be logged for time not spent in a pilots seat.
Both the designated co-pilot and relief pilot can claim PICUS (In command Under Supervision) for all time in a pilots seat acting under the supervision of a designated commander or his relief.
I used to love the smell of Jet-A in the morning...