WASHINGTON, D.C. ? For the second time in two weeks, Social Security numbers and other personal information of Navy personnel have been discovered on an Internet site, triggering an investigation.

The Navy said Friday that information on more than 100,000 naval and Marine Corps aviators and aircrew was on the Naval Safety Center Web site and on nearly 1,100 computer disks mailed to naval commands.

There was no indication that the information has been used illegally, said Navy spokesman Lt. Ryan Perry. He said Rear Adm. George Mayer, commander of the Naval Safety Center, had the information removed immediately and officials are looking into how the data was posted on the Web site.

The Navy is attempting to retrieve the disks, he said, and individuals whose data were revealed were being notified.