I looked after the ANK and JAC YS-11s for a year back in 2002/3 and it was a very enjoyable experience. Some of the JAC examples are seen here at Kagoshima on May 22, 2003.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/37748462@N07">Steven Byles</a> from Taipei, Taiwan
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/sjbyles/31419757696/">Japan Air Commuter YS-11s</a>