Airworthiness Directive · Amendment 39-23459 · Turbine engine compressor section
Rolls-Royce Deutschland Ltd & Co KG Engines
This AD applies to all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines, with a low-pressure compressor (LPC) blade having part number (P/N) FK23411, FK25441, FK25968, FW11901, FW15393, FW23643, FW23741, FW23744, KH23403, KH23404, or LV11570, installed.
The FAA is superseding Airworthiness Directive (AD) 2020-06-16 for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) Model RB211 Trent 768-60, 772-60, and 772B-60 engines. AD 2020-06-16 required initial and repetitive ultrasonic inspections (UIs) of the affected low-pressure compressor (LPC) blades and, depending on the results of the UIs, replacement with a part eligible for installation. Since the FAA issued AD 2020-06-16, RRD issued updated service material providing improvements to the ultrasonic inspection procedures and updated initial inspection compliance times. This AD requires initial and repetitive UIs of the affected LPC blades for sub-surface anomalies and, depending on the results of the UIs, replacement with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraphs (h) and (i) of this AD: Perform all required actions within the compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2025-0144, dated July 9, 2025 (EASA AD 2025-0144).
(1) Where EASA AD 2025-0144 refers to its effective date, this AD requires using the effective date of this AD.
(2) Where the Groups definition in EASA AD 2025-0144 specifies “NMSB”, this AD requires replacing that text with “RR Alert NMSB RB.211-72-AL191, Initial Issue, dated May 30, 2025”.
(3) Where the definition of an affected part in EASA AD 2025-0144 specifies “Part Number (P/N) FK23411, FW23643, FW23741, FW23744, KH23403, KH23404 or P/N LV11570”, this AD requires replacing that text with “P/N FK23411, FW23643, FW23741, FW23744, FK25441, FK25968, FW11901, FW15393, KH23403, KH23404, or LV11570, installed”.
(4) This AD does not adopt the “Remarks” paragraph of EASA AD 2025-0144.
Although the material referenced in EASA AD 2025-0144 specifies to submit certain information to the manufacturer, this AD does not include that requirement.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
