Originally Posted by
ppilot
I don't believe it matters that they have an autopilot. Two pilots are required under pt. 135 for IFR. An exception to the rule is made if there is an operating, approved autopilot, and in this case one pilot is allowed. Doesn't mean that two pilots are NOT allowed.
According to 61.51, you can not log SIC time unless the SIC is
required. Having an autopilot dis-requires the SIC, so you can not log it. You are certainly allowed to sit there and even perform the duties of an SIC, but since you aren't required, you cant log SIC.
But then again, it's your logbook. Log whatever you want.