856A3496G05 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 rotor disk inspection fixture, specialized in accurate dimensional and positional checks of turbine disks during MRO overhauls. It verifies key specifications including concentricity, axial runout, sealing groove dimensions and bolt hole positioning against strict tolerances, detects deformation, thermal damage or wear timely, avoids rotor imbalance and vibration under high-speed rotation, and prevents blade assembly deviation that may cause rubbing and hot-section failure.Made of high-strength heat-resistant alloy steel, it resists high temperature and mechanical impact, working stably at -55℃ to 390℃. Weighing 1.45kg, it features calibrated measuring references and precision locating structures, enabling efficient standardized testing with reliable, repeatable results. It is a vital tool to guarantee turbine rotor integrity and overall engine operational safety, efficiency and service life.