What happened
On 26 December 2007, a Bell Textron B206 helicopter, registration N678LW, was performing a private flight from Maaseik to Wevelgem. During the flight, the pilot encountered rapidly deteriorating weather conditions, characterized by encroaching mist and low cloud ceilings.
As the aircraft approached the Brussegem area, it encountered high-voltage electrical pylons. To avoid these obstacles, the pilot performed an abrupt evasive maneuver. This sudden movement caused the aircraft to enter a cloud layer, leading to a total loss of situational awareness. Upon emerging from the clouds, the helicopter was in a steep dive at an angle of 50 to 60 degrees. The aircraft struck a field in Merchtem at high speed, resulting in 5 fatalities.
The investigation
AAIU(Be) investigators examined the wreckage and analyzed GPS data to reconstruct the flight path. The investigation confirmed that the Bell Textron B206 was airworthy and that the engine and flight controls were functioning normally prior to impact. There was no evidence of structural failure or mechanical malfunction.
Investigators also reviewed meteorological reports and air traffic control communications. While the pilot had requested and received clearance to enter the Brussels controlled airspace under special VFR conditions, the investigation noted that visibility had dropped significantly due to mist. The analysis of the flight path revealed that the pilot did not follow the ATC-instructed routing, instead attempting to fly a straight path through the area.
Findings
- The primary cause of the accident was a loss of control in flight initiated by an evasive maneuver to avoid high-voltage power lines.
- The pilot's sudden movement caused the aircraft to enter clouds, leading to spatial disorientation.
- Contributing factors included deteriorating meteorological conditions and the pilot's limited experience operating this specific helicopter type in such weather.
- The investigation identified the influence of "get home-itis," where the desire to complete the flight despite worsening conditions contributed to the decision to continue the mission.