98V12003000000 is a specialized aerospace engine pneumatic system pressure testing tool, compliant with AS9100D quality standards and FAA/EASA MRO regulations, designed for CFM56 series turbofan engines. It is used to test the pressure tightness and stability of the engine's pneumatic system during maintenance, detecting potential leaks, seal failures or pressure anomalies that may affect the operation of associated aircraft systems, including cabin pressurization, anti-icing, and engine starting systems.

Made from high-strength, corrosion-resistant stainless steel with a high-precision digital pressure gauge, it operates stably in -20°C to 110°C workshop environments. Weighing 0.77kg with a quick-connect interface, it delivers testing accuracy within ±0.3 psi, simplifying the pneumatic system inspection process. It is an essential tool for engine pneumatic system MRO work.