856A1865G01 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 blade retaining ring assembly fixture, specialized in accurate mounting and locking of turbine blade retaining rings during MRO disassembly, repair and reassembly. It ensures precise concentricity with turbine rotor and tight fit of retaining rings, controls assembly clearance strictly, eliminates loosening risks, prevents blade displacement or detachment under high-speed rotation and high-temperature conditions, and safeguards turbine structural integrity.Made of high-strength heat-resistant alloy steel, it resists high temperature and mechanical impact, working stably at -55℃ to 400℃. Weighing 1.9kg, it features secure locking mechanisms, calibrated locating benchmarks and ergonomic operation design, enabling efficient standardized assembly with consistent accuracy. It is a vital tool to guarantee turbine section safety and overall engine operational reliability.