“Mayday, mayday, mayday, mayday!” the pilot responded, according to air traffic radio transmissions recorded on LiveATC.net. It appeared to be his last transmission before the twin-engine aircraft crashed about 5 miles off the coast about 12:30 p.m.

Six people were killed after a small plane crashed into the ocean off the coast of San Diego on Sunday, the authorities said. The plane, a twin-engine Cessna 414, crashed about three miles west of Point Loma, San Diego, at about 12:45 p.m. local time, the Coast Guard said on social media.