What happened
On the evening of June 13, 2006, a Cameron A-180C hot air balloon, registered as PH-JLA, was conducting a commercial flight near Deventer, Netherlands. The flight, carrying eight passengers, began in Harfsen at approximately 19:55. The pilot had reviewed several weather forecasts throughout the day, which indicated varying wind conditions, but ultimately decided to proceed with the flight.
During the flight, the pilot attempted to find a suitable landing site. An initial approach to a field near the A1 highway was unsuccessful due to the balloon being drifted toward the edge of the terrain. The pilot then climbed back to 1,000 feet to navigate over a residential area, but encountered unexpected wind shifts at low altitudes. As the balloon descended toward a final landing spot near the Douwelerkolk, a sudden change in wind direction—shifting from the southeast to the northwest—pushed the balloon toward high-voltage power lines and a residential area.
With fuel levels depleted, the pilot attempted a landing on a narrow strip of greenery. During the final descent, the pilot pulled the parachute cord to release hot air, but the action was too forceful, causing the parachute to partially detach. The resulting descent was much harder than anticipated. The basket struck a bush and tipped onto its side, causing 4 serious injuries and 4 minor injuries among the passengers, while the pilot sustained rib injuries.
The investigation
The Dutch Safety Board examined the meteorological conditions and the pilot's decision-making process. Investigators found that a low-pressure trough had moved through the region, causing the wind to shift significantly in the lower 2,000 feet of the atmosphere. While the pilot had consulted several forecasts, the most recent updates showed a worsening weather situation with increasing wind speeds at low altitudes.
Technical analysis of the aircraft showed no mechanical defects. However, the investigation noted that the pilot had estimated passenger weights rather than using actual weights, and the fuel levels were critically low by the time the final landing attempt was made. Additionally, the investigation looked into the safety of the passenger briefing and the physical protection provided by the basket during impact.
Findings
- The primary cause of the hard landing was the unexpected shift in wind direction at low altitudes, which pushed the balloon toward hazardous obstacles.
- The pilot's decision to proceed was based on earlier forecasts that did not fully account for the rapid change in wind patterns caused by the passing weather front.
- The force used to operate the parachute release mechanism contributed to the uncontrolled nature of the final descent.
- The basket design provided insufficient protection for the occupants during a high-impact landing.