Given that the US Department of Defense funded Indonesia’s Integrated Maritime Surveillance System, you would hope that they would be aware of it's detection capabilities in the Malacca Strait.
US Embassy Fact Sheet
"U.S. DEPARTMENT OF STATE
Office of the Spokesperson
November 18, 2011
2011/1967
FACT SHEET
DoD-funded Integrated Maritime Surveillance System
From FY2006 to FY2008 the U.S. Government provided approximately $57 million via the National Defense Authorization Act Section 1206 to support Indonesia’s establishment of an Integrated Maritime Surveillance System (IMSS) strategically located to cover Malacca Strait, Sulawesi Sea, and Moluccas Strait.
Read more:
http://iipdigital.usembassy.gov/st/e...#ixzz2vepwcOE9
I believe that the US currently has at least one P-3C searching in that area.
If anything was identified by that system you'd hope that the Americans and Indonesians would be much more forthcoming with information.
It's an extremely strange scenario though, the evidence seems to suggest that MH370's transponder was not operating, and no radio contact has been reported since the aircraft disappeared on route to IGARI.
Even if those systems were somehow rendered inoperable it would still have been possible to make contact with the ground via cellphone while overflying the island, the seemingly complete lack of contact from the aircraft baffles me the most
