Originally Posted by joepilot

They would be allowed to pick up passengers in NZ, fly to LAX, let some of them off in LAX, fly the rest to JFK, let them off and pick up others in JFK and fly them to wherever.

What they cannot do is pick up passengers in LAX and fly them to JFK.

It would also be legal to pick up passengers in LAX and fly them to LHR with a stop to pick up more passengers in JFK, but none of the LAX passengers would be allowed to get off at JFK.

I have done this in Australia. UA flew flights from SFO and LAX scheduled to land in SYD at the same time. Two hours later those same planes (with the previous days crews) would fly to Melbourne or Brisbane. We could only fly the passengers that we had already flown into the country, although we could swap the passengers that came in from SFO to the plane that came in from LAX.

Joe

Joe