Originally Posted by
b1lanc
How far away was that CRJ that ran into the vortice from the 380 heading the opposite direction?
From a briefing I saw a couple of years ago the 604 was some 15nm behind and 1000' underneath on a reciprocal track, so rather irrelevant for this discussion. But to indulge your digression, it was going to be an unpleasant ride, but there's a bit more to the cause of the severity of that accident that hasn't been coherently published yet (but the data is public). One can infer what it's about from the BFU interim report and the "what not to do in wake turbulence encounters" information promulgated in more recent times.
Funnily enough the formation being proposed would actually have the surfing aircraft
further away from the lead aircraft's vortices than an aircraft on a 1nm lateral SLOP recommendation to avoid descending vortices.