Engine Troubles Ground ANA 787s
ANA had to remove five Boeing 787s from service over the weekend. (Photo: Boeing)
ANA had to remove five Boeing 787s from service over the weekend. (Photo: Boeing)

Two All Nippon Airways Boeing 787s remain out of service after inspections uncovered a problem with their Rolls-Royce Trent 1000 engines. ANA grounded five of its Dreamliners over the weekend after the Rolls-Royce discovered some “minor” corrosion within an external gearbox during product development testing.