Southwest B733 at Las Vegas on Sep 11th 2014, flaps problems

A Southwest Airlines Boeing 737-300, registration N609SW performing flight WN-4748 from San Diego,CA to Las Vegas,NV (USA) with 114 people on board, was on approach to Las Vegas' runway 25L cleared for a visual approach descending through 4000 feet when the crew reported they had "a little flaps situation", were on the go and would come around for another approach. The aircraft climbed to 7000 feet, positioned for another approach to runway 25R and landed safely.