GOON,
You are right, the ICAO convention specifies in
art. 11: that any aircraft has to obey the rules of the air of the country it is currently operating;
art. 16: authorities of these countries have the right to check aircraft and respective documents without causing unnecessary delays, which imposes for me the right to enter the aircraft.This is also in accordance with the other two postings regarding FAA and Dutch authorities, I think.
Here an aircraft on an airport differs significantly from a ship offshore.But as to closed/open doors I think this only relates to the "police authority" (don't know the exact english term) of the commander.
------------------
This Airbus is o.k., but why did it come with a RENAULT key ??