1. The deadliest plane crash in Arizona history occurred on October 27, 2001, when a small plane carrying six people crashed in the Tonto National Forest. There were no survivors.

2. On October 27, 1985, the Phoenix Symphony Orchestra made history by performing in the Soviet Union. This was the first time an American orchestra had performed in the USSR since the Cold War began.

3. The famous Arizona Biltmore hotel opened its doors on October 27, 1929. The luxurious resort, designed by architect Albert Chase McArthur, quickly became a popular destination for Hollywood celebrities and politicians.

4. Arizona's first radio station, KDNZ, began broadcasting on October 27, 1922. The station, which was owned by the Arizona Republican newspaper, operated out of a studio in downtown Phoenix.

5. On October 27, 1863, Arizona was officially separated from the Territory of New Mexico and became its own territory. President Abraham Lincoln signed the bill establishing the Territory of Arizona, which included parts of present-day Arizona and New Mexico.