WASHINGTON (AP) — Federal investigators say the Boeing 787 Dreamliner that experienced a battery fire earlier this month was delivered to Japan Airlines less than three weeks before the fire.

The National Transportation Safety Board said Sunday in an update of its investigation of the incident that the airliner was delivered on Dec. 20. It had only recorded 169 flight hours and 22 flights when the fire erupted in one of the airliner’s two lithium ion batteries on Jan. 7.