New debris map from the Dutch Rijksoverheid:
http://www.rijksoverheid.nl/bestande...ering-1600.gif
Northwesternmost debris on this map has a distance of 16 km from the main impact site and a distance of 35 km from the BUK launch site alleged by the SBU. The mapping is cut off there, so probably debris can be found even further to the north west.
According to my calculations that would take the engagement distance to at least 44 km from the alleged launch site.