Boeing surveillance plane found not yet effective for missions

A new Boeing surveillance aircraft deployed to Japan last month as part of the U.S. shift to Asia isn't yet effective for its primary submarine-hunting and intelligence missions, the Pentagon's weapons tester found.

The new P-8A Poseidon exhibited "all of the major deficiencies" identified in earlier exercises when subjected to more stressful realistic combat testing from September 2012 to March 2013, Michael Gilmore, chief of the Pentagon testing office, wrote in his annual report on major weapons, which has yet to be released.

Flaws included the plane's radar performance, sensor integration and data transfer.

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