On January 23rd, 1970, The 1st Boeing 747 jumbo jet lands at Heathrow Airport to begin it's commercial service. What airline service was the first to use the jumbo jet? | TWA | American Airlines | Pan Am | Southwest Trivia Archives | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | | 33 | 34 | 35 | 36 | 37 |