A U.S. Navy's F/A-18 Super Hornet fighter approaches the deck of the Nimitz-class aircraft carrier USS Carl Vinson during the annual joint military exercise between South Korea and the United States, March 14, 2017.
A U.S. Navy's F/A-18 Super Hornet fighter approaches the deck of the Nimitz-class aircraft carrier USS Carl Vinson during the annual joint military exercise between South Korea and the United States, March 14, 2017.

TOKYO - A warplane from the aircraft career USS Ronald Reagan crashed into the sea northeast of the Philippines on Monday, but its two aviators were rescued safely. 

The U.S. Navy's 7th Fleet said the F/A-18 Hornet had a mechanical problem during Monday's routine operations in the Philippine Sea. 

A rescue aircraft plucked the aviators from the water immediately and brought them back to the ship, the Navy's statement said. They were both in good condition and the aircraft carrier returned to normal operations, the Navy said. 

The cause of the crash was under investigation. 

Monday's crash was the second involving aircraft belonging to the USS Ronald Reagan in less than a month. 

In mid-October, a MH-60 Seahawk crashed shortly after takeoff, causing nonfatal injuries to a dozen sailors. 

The aircraft carrier participated in a joint exercise known as “Keen Sword” with Japan and Canada from Oct. 29 to Nov. 8 in waters around Japan and near Guam in the Pacific. 

The F/A-18 was part of a Career Air Wing 5 aboard Ronald Reagan, the Navy said.