SEA84FA060

At about 1345 PST, the plt of a Cessna 172N, N4603F, departed crest airpark, Kent, WA, on a local pleasure flt. Aprx 5 min later, the plt & 1 passenger of a float equipped Cessna 180, N4908A, took off from lake meridian, Kent, WA, & were also on a local pleasure flt. At aprx 1355, the two acft collided in flt, then plunged to the ground. A witness, who saw both acft just prior to the in-flt collision, estimated that they were at about 500 ft AGL when they collided with each other. He stated that one acft appeared to be on a southwesterly heading while the other seemed to be traveling toward the northwest. He did not observe any evasive action by either plt & believed that neither plt saw the other acft as they were converging. An exam of the wreckage revealed that the two acft collided left wing to left wing.

At about 1345 PST, the plt of a Cessna 172N, N4603F, departed crest airpark, Kent, WA, on a local pleasure flt. Aprx 5 min later, the plt & 1 passenger of a float equipped Cessna 180, N4908A, took off from lake meridan, Kent, WA, & was also on a local pleasure flt. At about 1355, the two acft collided in flt, then plunged to the ground. A witness, who saw both acft just prior to the in-flt collision, estimated that they were at about 500 ft AGL when they collided with each other. He stated that one appeared to be on a southwesterly heading while the other seemed to be traveling to the northwest. He did not observe any evasive action by either plt & believed that neither plt saw the other acft as they were converging. An exam of the wreckage revealed that the two acft collided left wing to left wing.