856A3780G02 is a precision aerospace fixture compliant with AS9100D quality standards and FAA/EASA regulations, dedicated to aircraft engine combustor MRO operations. It serves as a professional combustor positioning and clamping fixture for disassembly, inspection, repair and reinstallation. It ensures precise axial and radial alignment of the combustor, maintains accurate fuel nozzle and liner clearance, eliminates combustion instability risks caused by assembly deviation, prevents overheating and damage under high-temperature working conditions, and safeguards engine combustion efficiency and stable power output. Made of high-strength heat-resistant alloy steel with anti-corrosion coating, it works stably at -55℃ to 700℃, resisting extreme heat and mechanical impact. Weighing 3.2kg, it has calibrated benchmarks and secure locks for standardized operation, critical to engine integrity and overall flight safety.