Originally Posted by
deadheader
At 04 seconds it passes directly between the sun and the camera; the exhaust is highlighted as a result. Just my two penn'orth...
I totally agree, having played with hunters there's no fuel or fluid drain in the lower rear fuselage(aft of the transport joint). There's nothing in that area that would give you a plume, and it doesn't show up on other images.
Regarding the AAIB not reporting on things we think significant, I will paraphrase a qote from a retired AAIB inspector who was presenting at a course I was on. "AAIB reports report the findings and analysis relating to an accident or incident, they do not provide a comprehensive description of every line of enquiry That was considered and dismissed during the course of the investigation". I imagine if they did that this report would be considerably larger.