What: VivaAerobus Boeing 737-300 en route from San Jose Cabo to Monterrey
Where: San Jose Cabo
When: Aug 21st 2011
Why: On takeoff, flight systems indicated there was a cargo fire.
The flight returned to San Jose Cabo where it made a safe landing. Examination proved there was no fire, and the flight was delayed, but continued on to Monterrey.

American Airlines flight AA-1191 had to return and make an emergency landing in Chicago, Illinois, on February 21st.
Norwegian Air International flight D8-2905 made an emergency landing at Gatwick Airport, England, on October 5th.