EMERGENCY United flight #UA1516 to Houston returned to Liberia after one of its engines overheated

United Flight #UA1516 to Houston, Texas, from Liberia, Costa Rica made an emergency landing after one of its engines overheated. The Boeing 737-800 (reg. N16234) planned to take off at 1225 LT had to burn fuel for about one hour over gulf of Mexico before returning to Liberia. Liberia Airport stopped traffic for a while to allow United Airlines…