Pushing back.  I assume this was the regular service to Belgrade.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/28642641305/">JAT 727-200 YU-AKC at AMS</a>