Not quite so simple I think...
I don't see why you couldn't log a check-flight etc as P1/s or PICUS, which is the same thing.
LASORS 2006, Section A, Appendix B 'Recording of Flight Time':
'He [a 'co-pilot'] may log as PIC U/S all the time he occupies a pilot’s seat and acts as pilot-in-command under the supervision of the pilot in command'...
i.e. there is a commander stipulated for the flight but others may
act as PIC at various times for various reasons.
One such instance is if it is a multi-pilot aircraft and the Captain is not doing the flying but the FO is. In this case the Captain is always the PIC but the FO is acting as PIC for that sector. FO can log the time as PICUS and the Capt as PIC. Nothing to do with flight tests.
But we don't fly multi-pilot aircraft, so how does the above apply?
ANO article 129(1) defines a 'co-pilot' as:
'a pilot who in performing his duties as such is subject to the direction of another pilot carried in the aircraft'
Sounds like that would apply to a licenced pilot who is with an instructor I think. Instructor is the 'Captain' and the person on the check is the co-pilot acting as pilot in command. By the rule above, PICUS time would be what is logged.
In the case of a flight test, the Examiner is PIC but the candidate is doing the flying under the Examiner's direction and acting as PIC, though he is legally the co-pilot. Assuming the test is successful, time logged by the candidate is PICUS. If the test is unsuccessful, see the next paragraph below...
Of course, official differences training or other formal training for ratings/ licences etc do not come under the above and time would be PUT. Same would be if the check ride was appalling and the instructor had to intervene maintain safe flight. That would link to another statement in LASORS Sect A App B:
'PICUS (Pilot-in-command under supervision):Provided that the method of supervision is acceptable to the Authority, a Co-pilot may log as PIC flight time flown as PICUS, when all of the duties and functions of PIC on that flight were carried out, such that the intervention of the PIC in the interest of safety was not required.'
Lastly, 'dual' is not a category for a logbook. You are PIC, PUT, SPIC, PICUS, P2 etc etc but 'dual' has no meaning for the recording of flight time.
Probably as clear as mud, but I tried!
