United Airlines flight UA-6180 had to return and make an emergency landing in Houston, Texas, on August 30th.
The plane took off for Norfolk, Virginia, but had to turn back due to a cabin pressurization problem.
The plane landed safely. All passengers and crew members remained unharmed.

Air New Zealand flight NZ-5106 had to return and make an emergency landing in Palmerston North, New Zealand, on September 14th.
Alaska Airlines flight 644 had to return and make an emergency landing at Portland International Airport, Oregon, on April 13th.
Southwest Airlines flight 118 had to divert and make an emergency landing in Amarillo, Texas, on March 18th.