FAA records show the 1973 Cessna 414 fixed wing aircraft is registered to Category 3 Aviation Corp in San Francisco.
The twin-engine aircraft was heading for John Wayne Airport when it crashed into a parked red card, a mile away from the airport on Sunday.
The Orange County coroner's office on Monday identified the victims as Scott Shepherd, 53, of Diablo; Lara Shepherd, 42, of Diablo; Nasim Ghanadan, 29, of Alamo; Floria Hakimi, 62, of Danville; and Navid Hakimi, 32, of Los Angeles.
The twin-engine Cessna plane was en route to John Wayne Airport when the pilot declared an emergency and crashed around 12:30 pm local time in Santa Ana on Sunday, near the South Coast Plaza shopping mall, CNN reported.
The FAA confirmed the pilot, who had reportedly renewed his license a year ago, declared an emergency just before they crashed, and will work with NTSB authorities to investigate the cause of the crash.More news: US jobless rate drops to 3.9%. in July; 157,000 new jobs created
No one on the ground was hurt, police said.
The Orange County Fire Department said the plane's engine cut out before it could make it to the airport. "You just felt the ground move", she told the New York Times.
Capt. Tony Bommarito of the Orange County Fire Authority said the accident could have been much worse.
"We looked up to see the plane falling nose first", she told the Times.
The FAA and the NTSB are investigating the cause of the crash. A phone call to the company was not immediately returned.