Under EU-OPS, JAR-OPS or what ever it is called this week,
Designated commander : The designated commander of the aeroplane may log as pilot in
command all the time. This includes rest taken on board.
Co-Pilot :
– The Co-pilot of the aeroplane may log as co-pilot all the time he acts as co-pilot whilst sitting in a pilots seat.
– First Officers acting as Inflight Relief Pilots can log PIC/US all the time he occupies a pilot’s seat and acts as pilot-in- command. All other time whilst occupying a pilots seat. will be logged as co-pilot.
– Captains acting as co-pilots, may log as PIC all of the flight time during which he relieves the Commander taking in-flight rest.
– A designated co-pilot (Captain or First officer) may not log as Flight time any periods during which he does not occupy a pilot’s seat.
– The holder of an instructor rating may log as a pilot-in-command all flight time during which he occupies a pilots seat and acts an examiner in an aeroplane.
– The holder of an examiner’s authorisation may log as pilot-in-command all flight time during which he occupies a pilots seat and acts as an examiner in an aeroplane.