Austrian Airlines flight OS-917 made an emergency landing in Vienna, Austria, on May 16th.
The plane took off for Salzburg, Austria, but had to turn back after the crew noticed an unusual odor in the cockpit.
The plane landed back safely. There were 54 passengers and 4 crew members aboard at the time; all of them remained unharmed.

American Airlines flight AA-383 had to reject take off from O’Hare International Airport in Chicago, Illinois, on October 28th.