A potential delay in the Ariane 6 rocket program has been highlighted in recent reports, following a technical issue detected during ground testing in August. According to a report by La Tribune on September 17, a "technical risk" could affect the launch schedule for the remainder of 2026. The following day, Space Intel Report identified the problem as a failure in a turbine pump within one of the rocket's engines. The issue was discovered during testing, and journalist Peter B. de Selding noted that this could reduce the number of launches by half by the end of the year. The European Space Agency (ESA), which oversees the Ariane 6 program, confirmed that there will be delays, potentially reducing the number of launches from eight to six in 2026. However, the agency did not specify the exact cause of the issue. Ariane 6 has been gaining momentum in recent years. It completed only one launch in 2024 but achieved four in 2025, with plans to complete eight in 2026—four of which have already been completed. The rocket even reached its first geostationary orbit by late August, marking a significant milestone. However, the program has faced previous challenges. During the first flight in July 2024, the upper stage of Ariane 6 failed to reignite its auxiliary engine for the final deorbit maneuver, resulting in a partial success. No major issues have occurred since then, until this recent alert. ArianeGroup, which builds the rocket, and Arianespace, which manages its commercial operations, have responded to the news. While they did not confirm any issues with the turbine pump, they emphasized that the schedule adjustments are temporary and will not disrupt the long-term industrial ramp-up of Ariane 6. They noted that if additional checks are needed in the production chain, the overall progress is still on track. The companies stated that the industrial supply chain is moving smoothly and that the goal of achieving 9 to 10 launches in 2027 remains achievable. A turbine pump is a vital part of a rocket engine, responsible for delivering propellants to the combustion chamber at high pressure, which is essential for generating the thrust needed to launch the rocket. In the main engine of Ariane 6, the Vulcain 2.1, the hydrogen turbine pump operates at around 33,000 revolutions per minute and produces 15 megawatts of power. A separate turbine pump is used for liquid oxygen. If the issue is indeed with the turbine pump, it is still unclear which one is affected. Engineers must also decide whether the faulty component can be repaired at the Guiana Space Center in French Guiana or if it needs to be replaced and transported from Europe. If a replacement is required, it may need to be sent from Europe to South America. The responsibility for manufacturing the liquid oxygen turbine pump is expected to shift from Italian company Avio to ArianeGroup, which already oversees the hydrogen turbine pump and the development of the Vulcain 2.1 engine. For now, the ESA has not specified how long the checks will take, and the date of the next Ariane 6 launch remains uncertain. The postponed launches are likely to be moved to 2027, which will be a very demanding schedule if the original plan remains unchanged.