AURORA, Ill. - Four people, including a 13-month-old girl, died in a fiery medical helicopter crash near Chicago late Wednesday night. TODAY’S TMJ4’s I-Team’s John Mercure has investigated the dangers of medical aviation. He has new information on Wednesday's crash. The chopper went down in clear weather in Aurora, Illinois. Every day, medical choppers take off from hospitals and airports, and experts we know say this crash confirms that outside of combat, medical aviation is the most dangerous flying there is. A terrible scar in a cornfield near Chicago: it's all that's left of the medical helicopter that crashed near Aurora, Illinois, killing three crew members and a 13 month old girl. The I-Team has discovered some disturbing details about Air Angels, Inc., the company that owned the helicopter. An expert Mercure spoke with confirmed that Air Angels, Inc. has had two previous crashes in January 2003 and August 2007. This is their third crash in six years. Experts say flying a medical chopper is like flying a time bomb. “It's as dangerous as you can get unless you're over in Iraq flying in military aviation,” Justin Green with Kreindler and Kreindler said. The stats back up Green's assertion: 12 serious medical helicopter crashes in the last year. Total deaths: 28. That's ten more than the previous deadliest year. “It is an inappropriate cost. You don't kill people to save people,” air safety investigator Christine Negroni said. Negroni's company, Humanitarian Research Services, points out two other important factors: 50 percent of medical chopper crashes take place between 10:00 p.m. and 6:00 a.m. and crew members are twice as likely to die in night time crashes. These were both true in the Aurora crash. Medical choppers generally don’t have a black box, and we've been told that the medical chopper in the Aurora crash also did not have any type of voice cockpit recorder. As our original investigation discovered, medical aviation is one of the most deadly forms of aviation.