All Nippon Airways has returned 3 of the 5 Boeing 787 aircraft into service after a brief grounding caused by a gearbox glitch on the Trent 1000.
The airline grounded the portion of 787 fleet on 22 July.
A gearbox component had corroded faster expected in ground testing, prompting the 787 launch customer to park the affected aircraft.
Replacement parts for the first 3 aircraft were installed before the airline resumed operations on 24 July.
Boeing has delivered 11 787s to the airline.