The pilot incorrectly entered the longitude from a sign outside the cockpit window as 01519.8 east (15 degrees 19.8 minutes east) instead of 15109.8 east (151 degrees 9.8 minutes east). The crew didn’t notice the problem until after the plane became airborne and started tracking in the wrong direction. Systems failed further and the crew asked to return to Sydney and conduct a landing without the use of navigation systems. The passengers experienced a three hors delay before a new depart in the right direction. Nothing more dangerous happened but this was a warning for the Air Asia company. Lesson learned, “AirAsia X would like to stress that we have in place robust management systems to monitor and prevent similar incidents from reoccurring,” a representative said.