Originally Posted by auraflyer
So if that's right, again suggests possibly in the north?
Are you still uncertain as to the approximate location of the debris? The plan was to work north to south across the area not searched in Phase 2/3 that is within the 20nm radius, then to proceed outward, as required. I believe Metron Figure 33 is the appropriate reference, as there are sufficient reasons to discount the pingers (produce a weak signal at high frequency, obscured by debris or mud, etc.), searching the remaining north sector doesn't take a long time (2 weeks?) and they would then be better positioned to expand the search south, without having to run north, again.
In any case, the BEA has drawn a nice picture of the approximate location (last page, below), in the abyssal plain to the north and west of LKP, and they said that the debris field was within this (dark blue) area; though their arrow identifies the abyssal plain, not the wreck within it.
http://www.bea.aero/fr/enquetes/vol....4avril2011.pdf