What happened
On the morning of December 9, 1999, a Piper PA-31 with registration SE-GDN departed Sundsvall/Härnösand airport for a flight that would end in tragedy. The aircraft was carrying a pilot and seven passengers. The weather at the time was characterized by heavy snowfall, gusty winds, and low visibility.
Shortly after takeoff, the air traffic controller noticed the aircraft deviating from its cleared flight path and turning toward the north. When contacted by the tower, the pilot reported experiencing issues with the aircraft's compass and requested directional assistance. The controller advised the pilot that the aircraft was climbing toward the northwest and warned of nearby terrain. Following this communication, all contact with the aircraft was lost.
An emergency locator transmitter signal was detected shortly thereafter. A search and rescue helicopter located the wreckage in a forest on the southern slope of Kvickberget approximately 30 minutes later. All eight individuals on board were fatally injured.
The investigation
The Swedish Accident Investigation Authority (SHK) examined the wreckage, the pilot's medical history, and the flight preparations. The investigation found no mechanical failures in the engines, propellers, or primary instrumentation. However, the investigation revealed that the aircraft was overloaded and tail-heavy, with the center of gravity near the aft limit.
Investigators also looked into the pilot's qualifications and medical status. It was discovered that the pilot had two medical conditions that would have disqualified him from holding a private pilot's license. Additionally, the investigation noted that the pilot's time to prepare for the flight was insufficient due to a late arrival at the airport following a business meeting.
Findings
- The pilot lost control of the aircraft while flying in instrument meteorological conditions (IMC).
- The aircraft was overloaded, placing the center of gravity dangerously close to the rear limit.
- The navigation system was likely misaligned, contributing to the pilot's distrust of the flight instruments.
- Severe weather, including snow and low visibility, created a difficult operating environment.
- The pilot may have been under professional pressure to complete the flight for his passengers.
- The pilot's underlying medical conditions may have impaired his ability to manage the high workload and stress of the situation.