856A5687G01 is a precision aerospace fixture compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine turbine section maintenance.It serves as a turbine nozzle guide vane positioning fixture, specialized in accurate fixing and alignment of nozzle guide vanes during MRO disassembly, inspection, repair and reassembly. It ensures strict vane angle and spacing accuracy, avoids misalignment-induced airflow distortion, pressure loss and turbine efficiency reduction, and prevents abnormal vibration and local overheating under high-temperature, high-speed operating conditions.Made of high-strength heat-resistant alloy steel, it resists high temperature and deformation, working stably at -55℃ to 350℃. Weighing 1.2kg, it features a quick-clamp structure for efficient operation and precise locating pins for reliable positioning. It is a vital tool to guarantee turbine nozzle assembly precision and overall engine operational safety and stability.