Japan’s All Nippon Airways is grounding three of its new Boeing 787 Dreamliners because of potential problems with their engines.
Aviation Week reports today that the Japanese carrier, launch customer for the Dreamliner, has repaired two of the five Dreamliners affected by the issue in their Rolls Royce engines, but will need more time to fix three others.
The planes were grounded after Boeing advised All Nippon that gears in some Rolls Royce Trent engines powering the planes had corroded in long-term tests. None of the gears singled out for more scrutiny have failed in use.
All Nippon has 11 787s. Six of those planes were equipped with different gears unaffected by the problems. The airline expects little disruption to its schedule. It is substituting other aircraft for the grounded planes.
Another Boeing Dreamliner customer, Japan Airlines, is not affected by the engine problems. Its 787s are equipped with General Electric powerplants.