Sometimes on missions with two ACs, you'll A-code one and J-code the other. This allows the other guy to be in command when necessary.
PIC time isn't really logged on the 781. Primary and secondary only deal with who's flying the plane.
Here's some info from 11-401:
3.4.1.2. For pilots, primary time is time actively controlling the aircraft excluding hands-on-time flown while instructing and evaluating (log such time under instructor or evaluator). It is not predicated on which set of controls is being used (multi-place aircraft), or on the duty position indicated on the flight authorization. Pilots receiving instruction while controlling the aircraft will log primary time.
3.4.2. Secondary Flight Time : Flight time logged by a crew member who is performing inflight duties related to the crewmember’s specialty, but who is not controlling the function of that specialty. Except as listed below, the total secondary time logged in each specialty may not exceed the total flight time. When in excess to the crew complement, a remark will be placed in the remarks of the AFTO Form 781 depicting the secondary duties performed by additional aircrew.
That's why most people just split it. It's your job to figure out your PIC time for an airline application. Basically, just keep track of your total flight time where you were in command. Keep an FAA logbook to track it.
Fly what you can, log what you need.
HD
[ 06. October 2006, 09:17: Message edited by: HerkDerka ]