I'm still not 100% convinced that this accident followed a missed approach. I know that at least one official statement suggested that a go-around had been initiated and I read of one eye-witness who said that the aircraft had 'veered away' in the latter stages of an approach.
Is it possible that both the above referred to another aircraft and not the Yemenia?
The crash site is on the run in to the HAI VOR from the north. If they were following the published approach procedure I would assume that they would aim to arrive overhead the VOR with plenty of terrain clearance then on to the HA NDB to set themselves up for the visual approach just as the approach plates that have been posted in this thread show.
I mentioned QNH/QFE very early on and others have mentioned it too. Could it be that the wrong altimeter setting was chosen which resulted in them descending into the sea before reaching the VOR?