C16/1999L Aircraft Incident at Lappeenranta TMA, Finland, on 29 July 1999
On Thursday July 29, 1999 at 16.00 local time an aircraft incident took place at Lappeenranta TMA at an altitude of 4000 feet MSL. A Saab 340B aircraft OH-FAF, call sign Finnair 585, owned by Finnair and operated by Swedish Flying Enterprise Ab flying a scheduled flight for Finnair, and a private twin-seated glider SZD-50-3 Puchacz OH-772 on a local flight, passed each other on intersecting flight paths so near that the captain of OH-FAF made an avoiding action by pulling the aircraft from descent to climb. According to the report of OH-FAF the distance between the aircraft was around 100 metres. The pilot of OH-772 did not see the other aircraft at the moment of passing. There were altogether 22 persons on board.
On August 4, 1999 by letter C 16/1999 L, the Accident Investigation Board (AIB), Finland appointed Jouko Koskimies and Ari Huhtala to investigate the incident described above.
The draft of this incident report was sent on October 13, 1999 to the Finnish Flight Safety Authority and to the Swedish Accident Investigation Board for comments, according to ICAO Annex 13. The comments were received on November 22, and November 19, 1999. They have been taken into account in the report. The investigation was finished on December 9, 1999.