What happened
On December 7, 2003, at approximately 13:30 UTC, a Z-142 aircraft, registration OK-LNM, was performing a private flight near the village of Pohořalka in the Chrudim district. The pilot was conducting low-altitude maneuvers near a cabin owned by his parents. After completing a 360-degree turn, the pilot initiated a left turn at an altitude of approximately 50 meters. As the aircraft began a slight climb while rolling around its longitudinal axis, it struck the treetops and crashed into a forested area. The impact triggered an intense fire that completely destroyed the aircraft.
The investigation
The ÚZPLN investigation established that the pilot was performing complex aerobatic maneuvers at an insufficient altitude. Forensic analysis of the scene confirmed that the aircraft's structure was caught in tree trunks, and the engine and propeller were separated upon impact. Medical examinations of the deceased revealed that both the pilot and the passenger died instantly due to polytrauma.
Investigators also conducted a toxicological analysis of the pilot, which found residual alcohol in his blood (0.28 g/kg) and urine (0.56 g/kg). While the pilot held valid licenses and medical certification, the investigation noted that he was in the elimination phase of alcohol metabolism. Witnesses also confirmed the pilot had consumed alcohol the previous evening.
Findings
- The primary cause of the accident was the failure to maintain a safe minimum altitude while attempting a complex maneuvering element in close proximity to terrain obstacles.
- A contributing factor was the influence of residual alcohol on the pilot's performance.
- The pilot's operation of the aircraft was characterized by careless and imprudent handling, which endangered the safety of the occupants and property on the ground.