MEXICO CITY (AP) Mexico's civil aviation agency says the government violated laws when it issued a license to the pilot of the aircraft that crashed and killed singer Jenni Rivera.

The General Directorate of Civil Aeronautics' final report says 78-year-old pilot Miguel Perez exceeded the age limit of 65 for the kind of license he obtained. The pilot, co-pilot and four other passengers were killed along with Rivera in the Dec. 9 crash south of the city of Monterrey.

The document released late Tuesday also says the Learjet 25 was 43 years old and had flaws such as flying uneven and trembling when reaching cruising speed.

The 43-year-old Rivera was a Mexican-American superstar musician known as the "Diva de la Banda," referring to a style of regional music.