WASHINGTON (REUTERS) - The US Federal Aviation Administration said on Wednesday a review of the Boeing 787 Dreamliner found the plane was "soundly designed" and met its"safety level."

The joint FAA-Boeing review did make seven recommendations for further improvements in Boeing processes and FAA oversight, FAA Administrator Michael Huerta said in a telephone news briefing.

The review was initiated after a battery fire occurred aboard a 787 in January 2013 at Boston's Logan International Airport.

The fire and another battery incident in Japan prompted regulators to ground the plane for 3 1/2 months last year.

The plane has also suffered a series of mishaps with brakes, fuel lines, electrical panels, hydraulics, and other systems.