Originally Posted by
Phantom Flyer
As an F/O, even if type rated, you are supposed to log SIC time since you are a "second-in-command" on the flight release (FAR Part 121) no matter which seat you're sitting in. The designated pilot-in-command logs PIC as he's the one that gets the chair at the end of the mahogany table without a glass of water at the hearing.
Maybe I missed it, but I didn't realize there was a debate about logging SIC vs. PIC. I agree with you, the only one who logs PIC is the guy who signed for the aircraft (with a few weird exceptions which are beyond the scope of this discussion, and perhaps even company specific).