Was wondering if anyone can help me clear this up. Flying with a buddy, and we are arguing over how to log in P.I.C. hours. I was always under the impression that only one guy can log in P.I.C. at a time. i.e. for a two hour trip, if we both want to log in PIC, we could only put 1 hour each. He says we can both log in two hours because one was acting as a safety/backup pilot. I know there are exceptions in the cases of instructors, where dual-PIC is allowed, but what he said seems to violate FAR Part 61:51 1) Only that flight time during which [the] pilot is the sole manipulator of the controls of an aircraft for which the pilot is rated, OR 2) when the pilot is the sole occupant of the aircraft, OR 3) when acting as pilot-in-command of an aircraft on which more than one pilot is required (by type certification or flight regulations).