A panel ripped off the right wing of a United Airlines jumbo jet over the Pacific Ocean on Saturday, but the plane returned safely to Manila and none of the 357 people aboard was injured.

The Boeing 747 landed at Ninoy Aquino International Airport about an hour after departing for Tokyo and San Francisco.The accident did not affect the plane's ability to fly, the airline and the U.S. Federal Aviation Administration said.

Last month, the cargo door of a United Boeing 747 blew off after the plane left Honolulu for Auckland, New Zealand, ripping a huge hole in the side of the fuselage. Nine people died when they were sucked out of the hole.

In April 1988 a crew member was killed and 61 passengers were injured when a section of fuselage ripped off a 19-year-old Aloha Airlines Boeing 737.