Rick Breitenfeldt, an FAA spokesperson, confirmed the aircraft was a Learjet 35 business jet that had departed John Wayne Airport in Santa Ana and was headed to Gillespie Field Airport in San Diego County with four people on the plane. “The FAA and NTSB will investigate. The NTSB will be in charge of the investigation and will provide all updates. Neither agency identifies people involved in aircraft accidents,” Breitenfeldt said. NTSB had few details to share on the crash early Tuesday. “The first NTSB investigator is expected to arrive on scene this morning,” agency spokesperson Peter Knudson said. “Two more...