Phoenix emergency landing
What: American Airlines Flight 436 departed Phoenix Sky Harbor International Airport at 9:03 a.m. for Chicago O’Hare
Where: Phoenix Sky Harbor International Airport
When: 9:22 a.m
Who: 138 passengers and five crew members
Why: The pilot returned to the airport when he noticed an acrid smell and haze in the cockpit. The auxiliary power unit is going to be examined and cleaned. Passengers changed planes.