tl;dr: Azriel "Al" Blackman, the Guinness World Records holder for the longest career as an airline mechanic, has died at 100, ending an 80-year tenure at American Airlines that began in 1942 when he was 16. Starting on Sikorsky flying boats at LaGuardia's Marine Air Terminal and finishing on the Boeing 777, he was honored in 2017 when American dedicated a 777-200 (N751AN, nicknamed "7BK") to him. He continued working until celebrating his 80th anniversary with the airline in 2022.