"The FAA also granted Boeing permission to begin flight test activities on two airplanes: line number 86, which will conduct tests to demonstrate that the comprehensive set of solutions work as intended in flight and on the ground; and ZA005, which is scheduled to conduct engine improvement tests unrelated to the battery issue."
Engine improvement tests??
Here is the FAA link...
(sorry, but due to budget cuts, the FAA cannot afford the word wrap in a press release)
Press Release – FAA Approves Boeing 787 Certification Plan
edit: Waiting on the NTSB repsonse...
and of course, the last line of the news release..
"The FAA’s January 16, 2013 airworthiness directive, which required operators to temporarily cease 787 operations, is still in effect,
and the FAA is continuing its comprehensive review of the 787 design, production and manufacturing process."