Engine - Low Pressure Turbine Stage 3 Blades - Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected IAE PW1100G-JM series engines must replace the specified LPT 3rd-stage blades at the next engine shop visit after May 21, 2020. They should verify that engines are not excluded by AD 2019-25-01 before proceeding. Maintenance teams should follow Pratt & Whitney Service Bulletin PW1000G-C-72-00-0111-00A-930A-D for removal and replacement procedures.
Summary
The Federal Aviation Administration Airworthiness Directive 2020-08-04 is a final rule addressing certain International Aero Engines LLC PW1100G-JM series turbofan engines. It specifically targets engines with low-pressure turbine (LPT) 3rd-stage blades, part numbers 5387343, 5387493, 5387473, or 5387503, due to reported blade failures. This directive mandates replacement of the affected blades to ensure continued airworthiness and safety.
What changed
This new airworthiness directive introduces mandatory replacement of the affected LPT 3rd-stage blades on specified IAE PW1100G-JM series engines. It clarifies applicability by excluding engines covered under a previous AD 2019-25-01 and defines compliance requirements without calendar time but at the next engine shop visit. The directive also addresses public comments and confirms the definition of an engine shop visit consistent with manufacturer service bulletins.
Why it matters
This directive is critical for aviation professionals as it prevents potential uncontained failures of LPT 3rd-stage blades, which could lead to engine failure and loss of thrust control. Operators and maintenance organizations must comply to maintain safety and regulatory compliance. Understanding the specific affected engine models and blade part numbers helps focus maintenance efforts and avoid unnecessary inspections or replacements.
More for International Aero Engines PW1100
All 18- EASA AD US-2025-26-04Miscellaneous Hardware - Hydraulic Fuel Pressure Fuel Oil Cooler Fuel Tube Assembly (CP09 Tube Assembly) / Thermal Management System Clevis Mounts - ReplacementJan 14, 2026
- EASA AD US-2024-14-04Turbine Engine Compressor Section - Low-Pressure Compressor 1st-Stage Integrally Bladed Rotor - ReplacementAug 15, 2024
- EASA AD US-2024-06-14Engine - High-pressure Compressor 2nd and 4th Stage Rotors - ReplacementMay 2, 2024
- EASA AD US-2024-05-11Engine - High-Pressure Turbine 1st / 2nd Stage Hub / High Pressure Compressor 7th and 8th Stage Integrally Bladed Rotors / Rear Hub - Inspection / Replacement
Get the next one by email
New ADs and bulletins for International Aero Engines PW1100 and Aero Engines PW1400, summarized like this page, every Monday.