The report on this incident should make for very interesting reading both from the operating aspect and the engineering maintenance regime in equal measure. Be interesting to learn when it was last jacked and the wheels spun / maxarets checked.
Who conducts it is a bit of a moot point really....strictly speaking, no injuries, thankfully, not airworthy so not usual AAIB territory...but there again, it came far too close to endangering the public so possibly with this in mind.