Dec. 9 (UPI) -- Nearly a year after Jenni Rivera and six others were killed in a plane crash in northern Mexico, investigating authorities have determined the pilot was too old to have a license and the plane was not safe to fly.
The General Directorate of Civil Aeronautics in Mexico determined that neither the pilot, 78, nor the 43-year-old Learjet, should have been allowed operate. Authorities said the plane had been involved in a crash in in 2005, when the pilot lost the ability to steer it on landing.