To review the little bits that we know about the search:
1. Early USN and Ocean Alert reports indicated FDR and CVR pingers located in 4000 feet of water, about six to seven miles off-shore.
2. Odyssey Explorer, with deep water exploration capability, leaves Falmouth, UK to join the search. It is currently about 600 nm west of Beirut with ETA of Feb 15th.
3. Ocean Alert and USNS Grapple search the area including shallow 150 foot depths 2 miles off shore where the FDR, part of the CVR, the horizontal stabilizer and a few other bits of airframe structure are located and recovered by divers from Lebanon's Navy. The CVR's pinger and memory module are still missing.
4. The deep water site has likely been searched via side scan sonar, but is too deep for divers to access. Presumably Odyssey Explorer will get a look at debris already mapped in the deeper water upon arrival Feb 15th.