WASHINGTON (AP) — Experts at the Federal Aviation Administration are expected to say next week whether they recommend accepting Boeing’s plan to fix its troubled 787 Dreamliners so the planes can resume flying, the agency head said Wednesday.

Officials in the FAA office near Seattle that certifies new planes as safe for flight are reviewing a Boeing proposal to revamp the 787’s lithium ion batteries to prevent them from catching fire, or to protect the plane in case of fire, Administrator Michael Huerta said.