2 fatalities

Training Aircraft Collides with Tree in Trängslet; Both Pilots Killed (SE-IOU)

Trängslet, SwedenFlight

On February 16, 1986, a Mitsubishi MU-2 Marquise (registration SE-IOU) operated by Nyge-Aero was involved in an aviation accident near Trängslet, Sweden in flight. 2 people were killed. Investigators recorded the probable cause as: The aircraft crashed after flying at an insufficient altitude because: the crew propensity to fly below the prescribed altitude, or some behavior in the cockpit or other factors on the ground that may have affected the attention of the crew. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 1 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

During a training mission as a moving target for the Swedish Army, the aircraft struck a pine tree at low altitude, causing a crash 500 meters away. Both pilots died.

Incident Overview

The aircraft was engaged in a local training mission in the region of Trängslet, acting as a moving target for the Swedish Army. While flying at low altitude, it struck a pine tree with its left wing, partially tearing it off. The aircraft then lost altitude and crashed approximately 500 meters from the point of impact. Both pilots on board were killed.

Sequence of Events

The crew was conducting a training sortie when the aircraft flew at an insufficient altitude. During this low-level flight, the left wing impacted a pine tree, resulting in structural damage. The aircraft subsequently lost control and descended, crashing 500 meters away from the tree. The impact was catastrophic, leading to the deaths of both crew members.

Probable Cause

According to the official investigation, the probable cause of the accident was flying at an insufficient altitude. This was attributed to either the crew's propensity to fly below the prescribed altitude or distractions in the cockpit or on the ground that may have affected their attention.