On November 13, 1999, at 2112 eastern standard time, a Beech BE36, N3089A, experienced a right and left main gear and nose gear collapse on landing rollout at Daytona Beach Airport, in Daytona Beach, Florida. The personal flight was operated by the commercial pilot under the provisions of Title 14 CFR Part 91, and instrument flight rules. Visual meteorological conditions prevailed at the time of the accident and an instrument flight plan was filed. The airplane sustained substantial damage and the pilot and passenger were not injured. The flight departed Tallahassee, Florida, at 1915. According to the FAA, the pilot was en route to Ormond Beach, Florida, when he reported a main landing gear indication problem. The pilot diverted to Daytona Beach Airport for a precautionary landing. During a visual check of the landing gear by the emergency vehicles operators, it was reported that the landing gear appeared to have been down. Throughout the entire sequence of events, the pilot reported that the landing gear indicator lights' intensity continued to vary from bright to dim. The pilot said he made a soft field landing on runway 7L and held the nose wheel off the runway. When the nose wheel touched down on the runway pavement, the main gear and the nose gear collapsed. Examination of the wreckage revealed damage to the propeller, gear doors, and the left and right wing inboard ribs. A post-accident examination of the airplane and the landing gear system was conducted. The examination of the landing gear system failed to disclose a mechanical malfunction or a component failure.