San Diego County officials identified four of the jet’s six occupants killed in the crash and ensuing fire. One was 42-year-old music agent and certified pilot David Shapiro, who owned the company to which the Cessna 550 Citation II was registered.

A nose landing gear wheel and tire broke off and hit an engine and wing during a Frontier Airlines attempted landing in Puerto Rico last month, according to a preliminary report from the National Transportation Safety Board.

Investigators found no oil in the right-side Rolls-Royce BR715-C1 engine of a Delta Air Lines Boeing 717 following an emergency landing in February that involved a "tremendous" amount of cabin smoke.

After a Delta flight made an emergency landing in Atlanta​ in February, a maintenance crew found there was barely any or possibly no oil in the aircraft's right engine, an NTSB report said.

Birds were sucked into both engines of a FedEx cargo plane that made a fiery landing in March at Newark Liberty International Airport, a National Transportation Safety Board preliminary report said Wednesday.

The National Transportation Safety Board, which is investigating Saturday's deadly crash of a Mexican Navy tall ship into New York's Brooklyn Bridge, is focused on the ship's guide tugboats and sudden acceleration.

WASHINGTON (Reuters) -Elon Musk’s Department of Government Efficiency initiative has recently assigned a team to review operations at the National Transportation Safety Board, a spokesperson for the NTSB confirmed on Wednesday.