98V27408712001 is a specialized aerospace engine fan blade balancing tool, compliant with AS9100D quality standards and FAA/EASA MRO regulations, designed for CFM56 and IAE V2500 turbofan engines. It is used to adjust and verify the dynamic balance of fan blade assemblies during maintenance, minimizing uneven centrifugal force caused by blade weight or position deviations, which prevents excessive engine vibration, reduces component wear, and ensures stable, quiet engine operation across all flight phases.

Made from high-strength aluminum alloy with a corrosion-resistant finish, it features an adjustable positioning fixture and precision weight measurement structure, operating stably in -20°C to 70°C workshop environments. Weighing 0.76kg with an ergonomic grip, it streamlines balancing workflows and ensures balance accuracy within 0.05g. It is an essential tool for fan system MRO work.