wreckage location?
Mr Troadec said that wreckage were located at about 3900 meters depth.
I searched for an area in GE starting at about 3850M depth or below and delimited this area with markers.
There is also the picture published by the BEA to help.
The result is here below.
The area should be read clockwise starting ie NW1-->NW2-->N1-->N2-->E-->SE1-->SE2-->S-->S1-->S2-->SW1 -->WO2-->NW1. Depth inside this area should be at or below 3850. Please allow some inexactitudes. There is a "peninsula" extending southwards from SO1/SE2 towards S points. Inside this peninsula is a limited area above 3850M depth.
The area would be delimited by the markers listed below.
LKP 2.980000 -30.590000
NW1 3.085187 -30.667351
NW2 3.092785 -30.665565
N1 3.105311 -30.635955
N2 3.107749 -30.576287
E 3.075085 -30.554822
SE1 3.053872 -30.570126
SE2 3.059476 -30.610205
S 3.037939 -30.626338
S1 3.0000628 -30.605944
S2 3.006704 -30.630662
SW1 3.052021 -30.635182
SW2 3.062580 -30.652065
From the picture published by the BEA, with the position of the arrow, and the scale indicated, wreckage could be at 8.5 KM/4.59 NM in the North of LKP and slightly towards the East. It is not very reliable and precise because it is impossible to say if the arrow points to the exact location or a global area. The extremity of the arrow would show wreckage position nearby the SE1 point at about 3.056226 -30.576041 at a depth of about -3870 meters.
GE allows to "dive" and observe the bottom of the ocean in a somehow flat grounds area surrounded by mountains in the north and other higher grounds southward.
Markers can be positioned with GE at the bottom of the sea to keep a visual contact.