Originally Posted by
Arciasr
This has been covered many, many times. Please search. If you're referring to logging time in a light GA aircraft, the answer is "no," unless you use the safety pilot loophole. An aircraft must be type certificated for two pilots, or be operated under regulations read: Part 135 under IFR requiring a second pilot for either to log SIC.
The aircraft must require a second in command or be operating under regulations that require a second in command.
14 CFR 91.109(c)(1) is one such regulation, and is not a "
loophole."