What happened
On July 28, 2022, an Ultramagic N-250 hot air balloon carrying a crew and nine passengers was caught in intensifying thunderstorms while flying near Bad Niedernau. The flight began as planned in the evening, with the pilot initially navigating through stable conditions. However, as the balloon drifted, it encountered approaching convective activity and heavy rain.
As the weather deteriorated, the balloon was subjected to a downburst—a sudden burst of cold air from the thunderstorm cells—which caused significant changes in wind direction and increased ground speeds to approximately 30 knots. The pilot attempted to find a landing site in the Neckar Valley to avoid forested terrain and high-voltage power lines. To clear the lines, the pilot executed a rapid descent. The resulting landing was extremely hard; the basket struck the ground on its side, tipped forward, and slid across the field. During the violent impact and subsequent tipping of the basket, two passengers were thrown from the basket. In total, two passengers sustained serious injuries (including rib fractures and shoulder tendon tears) and five passengers sustained minor injuries.
The investigation
The BFU investigation focused on the meteorological preparations and the pilot's decision-making process. Investigators reviewed GPS flight path data from a mobile phone and analyzed weather data retrieved from the pilot's briefing portal. The investigation also examined the technical condition of the Ultramagic N-250 and the pilot's professional background, noting his 36 years of experience and extensive flight hours.
Findings
- The primary cause of the accident was the balloon being caught by strong winds from approaching showers and thunderstorms, leading to a violent impact during landing.
- The pilot performed inadequate meteorological preparation, misinterpreting weather forecasts that clearly indicated thunderstorm activity for the evening.
- Despite having multiple opportunities to land safely during the first hour of the flight when terrain was suitable, the pilot failed to terminate the flight before the storm cells reached the flight path.
- The aircraft itself was in good maintenance condition, and the weight and balance calculations were correct; no technical failures were identified.