Size (CM): 210*110*60

Weright (KG): 300

J71009-69 is a precision-engineered aerospace engine compressor blade inspection gauge, compliant with AS9100D quality standards and CFM International Technical Specification CFMTS 5600, exclusively designed for CFM56-7B turbofan engines on Boeing 737 Next Generation aircraft during MRO and overhaul operations.

Fabricated from aerospace-grade stainless steel with a hard-chrome plated finish for wear resistance, it measures compressor blade root clearance (±0.01mm accuracy), airfoil twist angle, and edge chipping on blades with root diameters of 38–52mm and lengths up to 290mm. The gauge features a spring-loaded probe for consistent contact, a digital readout with data logging, and a compact, ergonomic handle for hangar use. Weighing 1.2 kg and measuring 320mm×85mm×60mm, it operates at -40°C to 80°C, complies with FAA Part 33 and EASA CS-E regulations, and ensures post-maintenance blade alignment to preserve engine compression efficiency and reduce fuel consumption for short-haul fleets.