What: Allegiant McDonnell Douglas MD-83 en route from Mesa to Pasco Washington
Where: Mesa
When: May 16th 2011
Who: 151 passengers, 5 crew
Why: After the flight took off from Phoenix-Mesa Gateway Airport, the cockpit developed smoke and the pilots smelled fumes. They reported the emergency, and returned to the airport where they made a safe landing with 50 firefighters on standby.
Maintenance inspected the affected plane.
Passengers were rebooked on an 11:00 flight.