The LEAP engine, developed by CFM International, is a next-generation high-bypass turbofan powering aircraft such as the Boeing 737 MAX, Airbus A320neo, and COMAC C919. Its advanced design—incorporating FADEC control, composite fan blades, and high-efficiency compressors—requires precise maintenance using specialized tools and ground support equipment (GSE).

1.Scheduled External Inspections

Key Tasks:

• Inspect composite fan blades and high-pressure compressor (HPC) blades for wear, cracks, or nicks 
• Check engine casing, cowling, fasteners, and seals for leaks or damage 
• Examine visible accessories and protective covers 

Specialized Tools & Part Numbers:

2.Fluid and Lubrication Maintenance

Key Tasks:

• Sample and monitor engine oil and fuel quality 
• Check for fuel, oil, or hydraulic leaks 
• Monitor fluid levels and system conditions 

Specialized Tools & Part Numbers:

3.Engine Performance Monitoring & Diagnostics

Key Tasks:

• Analyze FADEC system status and fault codes 
• Monitor key parameters: N1, N2, EGT, oil temperature, and pressure 
• Conduct vibration analysis for fan and HPC blades 

Specialized Tools & Part Numbers:

4.Overhaul and Critical Component Handling

Key Tasks:

• Remove and inspect high-pressure compressor blades 
• Balance composite fan blades and rotors 
• Install or replace combustion chamber and bearing seals 
• Use engine stands and hoists for safe handling 

Specialized Tools & Part Numbers:

5.Summary

1.Layered Maintenance Approach 

Routine inspections → Performance monitoring → Overhaul & component replaceme

2.Use of Specialized Tools and GSE 

Ensures accuracy, reduces maintenance time, and minimizes human error

3.Data-Driven Maintenance 

FADEC and vibration monitoring allow early detection of potential failures 

4.Safety Compliance 

Engine removal, hoisting, and handling of critical components require proper GSE 

For LEAP engines, maintenance focuses on composite fan and HPC blade inspections, fluid system checks, performance monitoring, and safe handling of critical components. Using authorized specialized tools and official part numbers ensures operational efficiency, compliance with CFM standards, and overall flight safety.

Shanghai Junxun Aviation Technology Company always keep the idea that "Quality is Our Life", committed to providing professional products and excellent services to the global aviation industry.

As the global aviation industry continues to grow, Shanghai Junxun Aviation will persist in its commitment to innovation and quality, providing more international customers with high-quality products and services.