SEATTLE, Wash. (Metro) -- Federal air safety officials are planning to investigate the power system of the new Boeing 787 Dreamliner following a number of incidents involving the planes this week. FAA investigators are expected to conduct an exhaustive review of the design and manufacturing process of the plane, which could take several weeks. A news conference is expected to take place later today, during which time the FAA will detail the review process. Meanwhile, a pair of Dreamliners have been grounded in Japan after two separate incidents today. A cockpit crew from All Nippon Airways saw what they described as a "spider-web-like crack" in the cockpit windshield during a domestic flight. The plane landed safely but the return flight was cancelled. Another ANA Dreamliner is grounded in southern Japan after crews discovered oil leaking from one of the plane's engines. No one was injured on either flight. Earlier this week, a cabin fire broke out inside a Japan Airlines Dreamliner at Logan Airport in Boston shortly after passengers and crew members had deplaned. One day later, a JAL Dreamliner headed from Boston to Tokyo had to abort a takeoff due to a fuel leak. Copyright © 2013 Metro Networks Inc.