US regulators said today they asked Boeing Co to provide a full operating history of lithium-ion batteries used in its grounded 787 Dreamliners after Japan’s All Nippon Airways revealed it had repeatedly replaced the batteries even before overheating problems surfaced.

US aircraft manufacturer Boeing has discovered a manufacturing error causing delamination in a fuselage section of some 787 Dreamliners, The Seattle Times reported on Sunday.

Citing an unnamed perso