AD 2023-17-12: Rolls-Royce Deutschland Ltd. & Co. KG Engines

What the FAA requires

The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd. & Co. KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines. This AD was prompted by reports of cracks on affected intermediate-pressure compressor (IPC) rotor shaft balance lands. This AD requires repetitive on-wing or in-shop borescope inspections (BSIs) of the affected IPC rotor shaft balance land for cracks and replacement of any IPC rotor shaft if necessary and prohibits the installation of an affected IPC rotor shaft on any engine, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference (IBR). The FAA is issuing this AD to address the unsafe condition on these products.

Read the full directive on the Federal Register →

Applicability

This AD applies to Rolls-Royce Deutschland Ltd. & Co. KG Model RB211 Trent 768-60, 772-60, and 772B-60 engines. (d) Subject Joint Aircraft System Component (JASC) Code 7230, Turbine Engine Compressor Section. (e) Unsafe Condition This AD was prompted by reports of cracks on the intermediate-pressure compressor (IPC) rotor shaft balance land. The FAA is issuing this AD to detect cracks on the IPC rotor shaft balance land. The unsafe condition, if not addressed, could lead to IPC rotor shaft failure and consequent uncontained high-energy debris, possibly resulting in damage to the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Requi

Part numbers this directive names

This directive does not name specific part numbers in its text; it applies by aircraft model. See the applicability above and the manufacturer's service bulletin it references.