Old enough to have flown on a 707: 727, 737*; 747 St. Louis - Gatwick + Heathrow often, and Amsterdam, 757 and 767. Almost all the older planes were TWA, this being St. Louis.
* Since this is now a Southwest-controlled City it would be interesting to contemplate how many 737 variants I’ve flown. The last was a brand new (like 3 days) 737 MAX 8 that carried 168 + crew for 175 seats. It was ginormous for a 737.
I once flew the first 727 airframe put in service. It was a United Flight and the Captain made a big deal about the fact that the plane would go to the Boeing museum at the end of that month. IIRC the Builder’s Plate had been mounted next to the flight deck door to confirm the fact. I don’t recall for certain whether the plate number was actually 001, but I believe it was.
Last edited by monochrome; 11-21-2017 at 08:19 PM.