Originally Posted by
CL65driver
I was under the impression that the only person who can log PIC in a 121 environment is the person whose signature is on the flight release... which will be the captain's?
Looks like the 250 hour wonders might have to hop back into the almighty 172 again before upgrading..

Sure, but that doesn't mean that an SIC can't perform the duties and functions of a PIC... Upgrade IOE is a perfect example. The new CA isn't fully qualified to act as the PIC, but is doing so under an instructors supervision.