TAESA Flight 725 covered the Tijuana–Mexico City route with a stop in Uruapan, Michoacán, Mexico. A McDonnell-Douglas DC-9-31 used to fly this route. On November 9, 1999, flight 725 went down a few minutes after leaving the Uruapan Airport en-route to Mexico City. 18 people were killed in the accident. TAESA's operation license was suspended due to the incident, which prompted inquiries regarding the airline's safety and maintenance procedures.