Airworthiness directives › 2025-05-04
AD 2025-05-04 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
Models named: RB211-Trent 970-84, RB211-Trent 972-84. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (type certificate previously held by Rolls-Royce plc) Model RB211-Trent 970-84 and RB211-Trent 972-84 engines with an installed drains mast, part number (P/N) KH31996 or FW29847, except those with Rolls-Royce modification 72-AK047 embodied in production.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 24 months after the effective date of this AD, modify the engine in accordance with Rolls-Royce Alert Service Bulletin RB.211-72-AK047, Revision 2, dated August 17, 2020.
Unsafe condition
This AD was prompted by cracks found in the transition duct area of the drains mast. The FAA is issuing this AD to detect and correct cracks in the transition duct area of the drains mast. The unsafe condition, if not addressed, could result in engine fire and damage to the airplane.
Affected ADs
This AD replaces AD 2019-05-02, Amendment 39-19584 (84 FR 8799, March 12, 2019) (AD 2019-05-02).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1