flyingcheesehead
Taxi to Parking
Whoo boy. I decided to take a crack at this one, and the answer is clear as mud.I highlighted the bold bits - where does the reg state this? There is no expression in the reg of any kind of limitation on passengers outside of the requirement to be Solo in the first instance. I read this as permitting passengers if a CFI is in the plane.
I expected the FAA would interpret this as @TCABM said. The intent has always been for this to be solo time, but as first multiengine and then complex training aircraft became harder and harder to rent and/or insure, they have added the PDPIC exceptions, first just for multi, but now for singles as well.
So, I went looking for an FAA Chief Counsel written interpretation, and found only one relevant one, the 2007 Olshock/Pan Am interpretation.
It initially says: (And note, in 2007 only the multiengine PDPIC exception existed)
2007 Olshock/Pan Am interpretation said:While the latter option requires the pilot to perform the duties of pilot in command, which are similar to the responsibilities for solo piloting, it is not solo flight time. The instructor may determine how many persons are allowed on the aircraft during a flight where the pilot in command holds a multi engine class rating and is logging flight time to meet the requirements for a commercial pilot certificate under section 61.129 (b)( 4).
Which sounds like you can take a passenger... But then it finishes off with:
2007 Olshock/Pan Am interpretation said:If two crewmembers are required for proper operation the aircraft, the persons aboard the aircraft could include the pilot in command, the second in command and the instructor. The instructor also may permit others on board for instructional purposes.
So, it sounds like you can have additional people on board, but only for instructional purposes.