FAA approves resumption of Boeing 787 flights

WASHINGTON (AP) — Federal officials intend to lift the order grounding the beleaguered 787 Dreamliner after accepting Boeing’s revamped battery system even though the root cause of battery failures that led to a fire on one plane and smoke on another remains unknown.

The Federal Aviation Administration said Friday it would send airlines instructions and publish a notice next week lifting the 3-month-old grounding order that day. Boeing will then have the go-ahead to begin retrofitting planes with an enhanced lithium ion battery system.

Dreamliner flights could resume within a week, the agency...