What I read, the FDR was one of three Midway class carriers. There was not any information about a major accident on her. She was decommissioned in 1977 and scrapped in 1979. However, since I spent time around Bremerton, it is not uncommon for accidents such as falls, fire, and explosions to happen on ships while in storage and make the local newspaper. This may have happened but never made the major headlines.
The FDR is sometimes mixed up with the Essex class Ben Franklin CV13. This was the carrier that was badly damaged by kamakazies and sailed halfway around the world to NewYork under her own power.
The Coral Sea was finally stricken in 1997 and scrapping began in 2000. Only Midway is left and she just took a final cruise from Alameda to SanDiego to become a museum.