The main investigation, which also involves the FAA and Boeing, focuses on the 787's cutting-edge lithium ion battery system that powers the plane's auxiliary power unit.
For the February quarter, he cuts his view to 70 cents from 87 cents, while cutting his unit forecast to 9.6 million from 11.5 million, well below guidance in the 11-12 million unit range.
As a result, the firm has taken measures to try to turn around the fortunes of the unit, including cancelling services on loss-making routes and streamlining some of its maintenance operations and cutting jobs.