I wasn't trying to get anything off topic. I've flown for several 135 carriers and am familiar with Part 135 OpSpecs that will allow for a single pilot certified aircraft to Operate with an SIC who would be a required crewmember per OpSpecs approved by the FAA for that company. The reason I raise this issue is that, on the fractional side, EAS operates under Part 91, NOT part 135.

Given that:
1) An SIC cannot log time simply because an Insurance policy states that aircraft must have two pilots. Insurance companies are not regulatory and have no oversight authority.

2) Part 135 OpSpecs are not binding upon flights operated under Part 91, therefore an OpSpec requiring aircraft to be flown with a second in command would allow for an SIC to log time ONLY during part 135 flights or during 91 flights in a TurboJet where the PIC does not have the Single Pilot Designation on his License/Rating.

3) Someone stated that if one elects to not use the autopilot a case can be made for logging SIC time. I think this statement likely goes back to the OpSpec for Autopilot in lieu of SIC, which would be a 135 OpSpec and not apply to Part 91. However, even if it did...would it be possible to fly in RVSM airspace without an autopilot? This would restrict all flights to FL280 or less.

4) If you can legally use a GOM under Part 91 to require a second crewmember, what is to prevent someone for writing a policy with their Cessna 152 or Piper Seminole that "requires two crewmembers"

The reason I ask all this is because my friend's goal is to end up at a 121 carrier (not a regional). I'm not sure how he would be able to explain SIC time in a King Air 90 or 350 or any of the Phenom aircraft. I ran into a Part 91 crew just yesterday in Florida and asked them their thoughts. The right seater stated he doesn't log the time on his Part 91 flights but that their aircraft is on a 135 certificate (with OpSpecs requiring two crewmembers) and on the occasional 135 flights they do, he does log SIC time (he received an SIC type rating from CAE).

I encouraged my friend to apply for a LearJet SIC position, so hopefully that will work out for him as he can log SIC for both Part 91 flights and 135 flights on that! I just can't find any evidance that would allow for SIC time in a single pilot certified aircraft operating with a PIC who is typed (and designated as a PIC type rated single pilot (S) when applicable).