Robin. Absolutely. If you're not PIC, you cannot record the time as PIC (or anything else in a single pilot aeroplane unless you're with an instructor or examiner). The landings however do count as long as you are sole manipulator of the controls. Your operating capacity (PIC, Pu/t, etc) is not relevant and hence is not even referred to in the regs.
Flights in which I have had control, and which I wish to keep a record of, but which do not fit into the usual operating capcity categories, get logged as SNY: supernumerary crew.
SNY is defined in regulations, and would seem to apply to such circumstances, amongst others. SNY time does not count towards flying time totals - for me the time goes in one of the 'other' columns just for the record. I also have to use SNY at work on some occassions, but that's another story.
Last edited by Torque Tonight; 22nd November 2012 at 15:07.