JAL 747, Second Jetliner Report Flight Problems
A Japan Air Lines Boeing 747-SR landed at Osaka on Thursday night with a cockpit warning light indicating rudder problems. Nearly two hours later, another jetliner made a one-engine emergency landing at Osaka, officials said.
A JAL spokesman said that Flight 121 from Tokyo with 557 people aboard landed as scheduled just after a cockpit warning light indicated trouble in the upper rudder.
The spokesman said maintenance crews later found the problem to be in a “servo actuator,” a device that helps control the movement range of the upper rudder.
Later Thursday, a twin-engine Boeing 737 carrying 131 people made a one-engine landing because of an oil leak that shut down one engine, officials said. The 737 is the same type of aircraft involved in Thursday’s accident at Manchester, England, in which at least 54 people died.
The pilot of All Nippon Airways Flight 388, on a flight from Oita to Nagoya, shut down the malfunctioning engine, declared an emergency and flew for 35 minutes on his right engine alone after discovering the oil leak, an airline spokesman said.
An airline spokesman said inspectors traced the trouble to a loose bolt connecting a gear box to a sensor system that monitors impurities in oil flow.
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