What happened
On June 24, 2000, a Beech V35B with registration D-EDVV crashed near Beterås, Sweden, resulting in 4 fatalities (the pilot and three passengers). The flight originated in Lübeck, Germany, with the intention of delivering passengers to Karlsborg, Sweden.
While cruising at 11,000 feet, air traffic controllers observed the aircraft performing erratic altitude changes, climbing to 11,400 feet before descending sharply to 8,500 feet and disappearing from radar. The pilot did not respond to multiple radio calls from controllers. Witnesses on the ground reported hearing a loud, piercing engine noise and seeing the aircraft in a climbing turn before it struck a forest area at high speed.
The investigation
The Swedish Accident Investigation Authority (SHK) examined the aircraft's maintenance, the pilot's medical history, and the meteorological conditions. The investigation confirmed that the aircraft was mechanically sound and held a valid certificate of airworthiness. However, investigators found significant issues regarding the flight's preparation. The aircraft was operating with a takeoff mass exceeding its maximum allowable limit, and the center of gravity was positioned behind the aft limit.
Furthermore, the investigation looked into the pilot's medical background, noting a history of heart problems treated with medication. The weather analysis revealed that the flight path encountered a low-pressure system with risks of severe turbulence and ice accretion.
Findings
- The pilot suffered from documented heart problems and was undergoing treatment.
- The aircraft was overweight and had an unsafe center of gravity.
- The flight was subject to significant risks from severe turbulence and icing.
- The pilot's medical condition likely incapacitated him during the encounter with adverse weather.
- The flight's nature, involving the transport of passengers for hire without proper permits, was classified as unlawful aviation under Swedish regulations.
Safety action
- The Swedish Civil Aviation Administration was recommended to ensure that air traffic control at larger airports receives access to updated weather radar information to better assist pilots in avoiding hazardous weather.