Sitting next to two SAS DC-9s is this KLM European workhorse.  Aer Lingus'BAC 1-11 shows the straighter lines of the 1-11 compared to the smoother DC-9.
<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@N02/22181661276/">KLM DC-9-30 PH-DNO at AMS</a>