On October 28, 2004, about 1915 eastern daylight time, a Scottish Aviation Bulldog model 120/121, N556WH, registered to a private individual, collided with trees then experienced collapse of the right main landing gear during an emergency landing at the Jacksonville International Airport, Jacksonville, Florida. Weather conditions are unknown in the area of the tree contact location, and no flight plan was filed for the 14 CFR Part 91 personal flight from Newnan Coweta County Airport, Newnan, Georgia, to Jacksonville Naval Air Station, Jacksonville, Florida. The airplane was substantially damaged and the private-rated pilot, and one passenger were not injured. The flight originated about 1645, from Newnan County Airport. The pilot stated that before departure both fuel tanks were filled and after takeoff, the flight proceeded towards the destination airport though deviation to maintain visual flight rules was necessary. After flying over the Okefenokee Swamp, which is located in the southeastern portion of Georgia, he reported losing several hundred feet of altitude while looking down to confirm a radio frequency, then looked up and observed trees. He applied aft elevator control input, added power to climb, then felt impact with several trees. He then climbed and flew in a southerly direction to avoid entering Jacksonville's airspace, and after verifying the airplane was controllable, he established contact with Jacksonville Approach Control and declared an emergency. The flight was vectored to the Jacksonville International Airport where after touchdown, the right main landing gear collapsed. Examination of the airplane revealed the leading edges of both wings exhibited semi-circular indentations. Additionally, the inboard drain for the left fuel tank was separated. The right wing fuel tank was drained and found to contain 2 quarts of fuel; the fuel selector was found positioned to the right tank position. The leading edge of the right main landing gear was noted to have impact damage; tree bark was noted in the damaged area of the gear.