CANBERRA, Australia—Search teams began scouring a remote section of the Indian Ocean for possible debris from Malaysia Airlines Flight 370 for a second day, after satellite images pointed to new potential clues on the missing jet.

An Australian-led operation on Friday directed five aircraft to a revised area about 1,550 miles from the Western Australian capital of Perth to search for two objects spotted on satellite images. One, at about 79 feet, is larger than a shipping container.

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