If 'CASA Eastern' do not allow it, then someone needs to be told quite firmly to butt out.
Provided that the operator writes something in their operations manual to cover RHS recency and recurrent, nothing in legislation says two Line Captains can't fly together.
What the legislation does spell out quite clearly is that the operator must designate only one person as the PIC. That could be whoever is in the LHS for that sector (usually) or the more senior of the two Captains, or the one with blue eyes etc etc.
Plenty of examples of 'heavy crew' operations out there, where for some sectors two Captains will fly together, with the F/O sitting that one out for rest purposes.
That then leads into how is the flight time logged on heavy crew operations? For simplicity, one operator allowed two thirds of the day's total, plus all of the duty for determining following rest. No one had a problem with this, including CASA.
Last edited by Mach E Avelli; 10th Oct 2015 at 21:03.