United Airlines flight 401 had to make an emergency landing at Los Angeles International Airport, California, on January 11.
The Airbus A319, travelling from Denver, Colorado, declared emergency due to a suspected mechanical problem.
The plane landed uneventfully and all 120 passengers aboard remained unharmed.
The nature of mechanical problem is not clear at the moment.

Shaheen Air flight NL-718 made an emergency landing in Lahore, Pakistan, on June 16th.
Pakistan International Airlines flight PK-764 suffered a bird strike near Faisalabad, Pakistan, on September 4th.
KLM Airlines flight KL-897 made an emergency landing in Amsterdam, Netherlands, on September 30th.
Brussels Airlines flight SN-2104 had to return and make an emergency landing at Heathrow Airport, England, on August 26th.