Engine — Intermediate Pressure Compressor Rotor Shaft — Inspection
- Published
- Effective
- Deadline
- Replaces
- 2020-0208
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform on-wing borescope inspections of the affected IPC rotor shaft within specified compliance times based on engine condition and continue inspections at intervals not exceeding 500 flight cycles or 5,000 flight hours. In-shop inspections are required during each engine shop visit. If cracks are found, the affected part and stage 3 rotor blade set must be replaced before further flight. Compliance with these requirements begins from 7 October 2024, the effective date of the AD.
Summary
EASA Airworthiness Directive 2024-0185 is issued for Rolls-Royce Deutschland RB211 Trent 970-84, Trent 972-84, and Trent 972E-84 engines, commonly installed on Airbus A380 aircraft. The directive mandates inspections of the intermediate pressure compressor (IPC) rotor shaft, specifically part number FW20677, to detect cracks that could lead to rotor shaft failure and potential engine damage. It includes on-wing and in-shop inspection requirements along with corrective actions if cracks are found.
What changed
This directive supersedes EASA AD 2020-0208 and introduces an additional on-wing borescope-fluorescent penetrant inspection method for cases where standard borescope inspections are inconclusive. It also adds instructions for replacing the affected IPC rotor shaft and stage 3 rotor blade set if cracks are detected. The directive retains previous inspection requirements but updates compliance times and inspection techniques.
Why it matters
This AD is critical for aviation professionals as it addresses a safety risk involving potential cracks in the IPC rotor shaft that could cause engine failure and damage to the aircraft. Operators and maintenance organizations must comply with the inspection and replacement requirements to ensure continued airworthiness and prevent in-flight incidents. Compliance ensures regulatory adherence and reduces operational risks associated with engine component failure.
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