All Nippon Airways Co. on Wednesday delayed a flight from Tokyo's Haneda airport to Frankfurt for about 1 hour and 40 minutes due to a problem in the wiring of a fire extinguisher for an engine on one of its Boeing 787 Dreamliners.
ANA found similar wiring problems in two other aircraft after checking all 20 of its Boeing 787s, while Japan Airlines Co. returned a Helsinki-bound Dreamliner to Narita for a checkup after receiving notification of the problem.
The problems took place in the control system of the fire extinguishers near the front cargo space. When a fire occurs in one of the engines, extinguishers may erroneously work on another engine, ANA said.
These problems were not related to the battery problem in January that triggered the worldwide grounding of the Dreamliner, the airliner added.