Everyone I have talked to here in China that operate on a heavy crew split the PIC 50/50. On a 13 hour flight 1 PIC cannot log 13 hours of PIC time.
4Holer,
You may want to look into that a bit. Chinese CCAR's are modelled after the US FAR's which state:
FAR 1.1 Definitions
Pilot in command means the person who:
(1) Has final authority and responsibility for the operation and safety of the flight;
(2) Has been designated as pilot in command before or during the flight; and
(3) Holds the appropriate category, class, and type rating, if appropriate, for the conduct of the flight.
FAR 61.51 Pilot logbooks.
(e) Logging pilot-in-command flight time.
(2) If rated to act as pilot in command of the aircraft, an airline transport pilot may log all flight time while acting as pilot in command of an operation requiring an airline transport pilot certificate.
In all of the air carrier operations I've been involved in, which now covers 5 different jurisdictions including China, the Pilot In Command has been designated prior to the flight in the dispatch flight release. Unless there is a provision within the carrier's approved operations specifications and/or a policy providing for such within the company's operations manual, it is not within the crew's discretion to transfer that authority and responsibility among themselves as they see fit. The designated PIC remains the PIC for the entirety of the flight in all but the most extreme circumstances (such as debilitating illness).
With respect to who logs what, the PIC is entitled to log all flight time while acting as the PIC, regardless of the duration of the flight, or whether there are augmenting pilots as a part of the crew. Whether at the controls or resting the PIC retains the authority and responsibility over the aircraft, and that is what is being logged, not time spent physically at the controls. Aside from the specific circumstance of a pilot undergoing command training under the supervision of a qualified PIC, only the designated PIC is entitled to log the flight time as PIC time.
Now, some jurisdictions have come up with innovative ways of parsing the logging of flight time requirements in attempts to make end-runs around Flight Time and Duty regulations, but China isn't one of them (yet!)
Ultimately, you can put whatever you think your carrier will certify into your logbook if you want to, but don't be surprised if somewhere down the road you encounter other carriers with less permissive interpretations and an awareness of what the actual policies of your past Chinese carrier are. If that were to happen you may find yourself with some explaining to do, and possibly in need of a bottle of white out.
Cheers,
ELAC