Not quite FJ but (as a ground bourne back room boy) I once had 3 hours in the right hand seat of a C404 on pollution recce job. Pilot gave me the handles and levers 5 mins after t/o, flew the thing down to 400' with the SLAR man down the back calling targets (knackered by the time we got back!) and then gave it back to the pilot 5 miles finals - and promptly threw up! It's funny how having something to do keeps your breakfast under control! Ferkin brilliant trip.