As a kid flying as an unaccompinied minor with my brother on TWA. If my memory serves me correctly it was a DC-10, I only remember it having two isles and 4 lavs in the back, and more seats then I had ever seen on airplane. We were brought onboard prior to the boarding process and let in the cockpit (I dont think they had flightdecks in the 70's...lol) with the pilots, prior to the flight. Im sure I talked their ears off..... That was way cool... My Grandpa, one Aunt, one Uncle and Dad, all private pilots, non instrument rated.