Incident Overview
On an unspecified date, a Cessna and a Beech A-36 Bonanza collided approximately 3 miles south of an airport. The controller had cleared the Cessna to pass southbound through Class D airspace. At 1802:09 CDT, the controller advised the Cessna pilot to report abeam the airport. The pilot acknowledged at 1802:13 CDT but did not make the report. The record indicates that the controller did not ask the Cessna pilot if she was abeam the airport.
Sequence of Events
At 1803:35 CDT, the pilot of a Beech A-36 Bonanza contacted the tower, reporting being 9 miles south and inbound for landing. The controller instructed the pilot to report 4 miles south of the field and plan for runway 36. At 1803:47 CDT, the A-36 pilot inquired about an aircraft reported 10 miles south. The controller responded that aircraft was "well clear of the Class Delta surface area." The A-36 pilot acknowledged.
At 1804:06 CDT, the controller advised the A-36 pilot about another aircraft being monitored. The A-36 pilot acknowledged. At 1805:53 CDT, the A-36 pilot reported 4 miles south. The controller had cleared the A-36 pilot to land on runway 36 at 1803:56 CDT, and the pilot acknowledged.
Collision
During this period, the controller was monitoring an aircraft about 5 miles southeast of the airport, which had reported landing gear difficulties. The record shows that the controller did not advise the Cessna and A-36 pilots of each other's proximity. The two airplanes collided about 3 miles south of the airport.