As was discussed in part 1 of my YS-11 trilogy the NAMCO product got its big break with Piedmont and gave sterling service as a Pacemaker for nearly 14 years. So let's hear it for the 'Yokohama Mama':
Piedmont Airlines NAMC YS-11 by rstretton, on Flickr
Piedmont Airlines NAMC YS-11 by rstretton, on Flickr