Hi,
Suppose the a/c lost all power and glided from LKP
I don't agree with this supposition ... if you read the ACARS ..
BEA read also the ACARS ... and maybe more we don't know about.
I can't suppose a glide from them.
unfeasibly large search area
The aera phase 1 the very first research .. (with ASSUMPTION of working pingers) was not a large one !
phase 1&2 included the crash site
And phase 4 included the crash site.
The difference is they used appropriate tools for this search and they assumed (this time) that the pingers were no more working !
At the first search .. they have two doors to open ....
One with the pingers in the room .. the other with no pingers ...
They opened only one door .