Is it time to reevaluate the search process ?
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To do so, the Metron Bayesian framework could greatly help (like for the AF447 phase IV search): it enables to integrate all the search data whether positive (possibly, for the flaperon discovery*) or nagative/unsuccessful** (which is also a piece of information) which is the case for all the search paths done in the Indian Ocean (which is already a rich, large database).
* what was done in
https://www.dropbox.com/s/m6qknxrr7q...Aug%202015.pdf
** what was done in
https://metsci.com/Portals/0/Search%...20AF%20447.pdf
Other more complete drifting models, including wind forcing & wave interaction (ATSB, CSIRO, German modified Sebille's transport model, USCG, US Navy, ...) should also be tested under this same Bayesian framework.