All Nippon Airways (ANA) and Japan Air Lines (JAL) will replace parts in PW4000 engines in their Boeing 777s for a total of about 9.5 billion yen following incidents of engine trouble earlier this year. ANA will replace blades in the high-pressure turbines in 42 engines for some 5.2 billion yen and JAL in 39 engines for about 4.3 billion yen. (Kyodo News)