EASA AD 2025-0007
Engine — High-Pressure Turbine — Rotor Interstage Seal — Replacement
Summary
The document titled 'Engine — High-Pressure Turbine — Rotor Interstage Seal — Replacement' addresses maintenance requirements for the CFM INTERNATIONAL LEAP-1A and LEAP-1C engine models. It provides instructions related to the replacement of the rotor interstage seal in the high-pressure turbine section of these engines. This document is intended to ensure continued airworthiness and safe operation of aircraft powered by these engines.
What Changed
This document introduces mandatory replacement procedures for the rotor interstage seal in the high-pressure turbine of CFM LEAP-1A and LEAP-1C engines. It specifies updated maintenance actions that must be followed to comply with the new safety requirements. The regulation establishes clear guidelines for the timing and method of seal replacement.
Why It Matters
This regulation is critical for aviation professionals because it directly impacts engine reliability and safety. Operators and maintenance organizations must comply to prevent potential engine failures related to the rotor interstage seal. Ensuring adherence helps maintain regulatory compliance and reduces the risk of in-service engine issues.
What To Do
Affected operators and maintenance teams should review the replacement instructions and schedule the rotor interstage seal replacement as specified. Compliance with the replacement requirements should be integrated into maintenance planning to avoid operational disruptions. Any deadlines or intervals for replacement must be strictly observed to maintain airworthiness.