Airworthiness Directive · Amendment 39-16898 · Rolls-Royce plc (RR) RB211-Trent 800 Series Turbofan Engines
Rolls-Royce plc (RR) RB211-Trent 800 Series Turbofan Engines
This AD applies to all Rolls-Royce plc (RR) RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines. These engines are installed on, but not limited to, Boeing 777 series airplanes.
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-Trent 800 Series Turbofan Engines. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as fuel leaks from the engine due to damage to sections of the fan case low-pressure (LP) fuel tubes. We are issuing this AD to prevent engine fuel leaks, which could result in risk to the airplane.
Unless already done, do the following actions.
Within 2,000 hours in service after the effective date of this AD, or before accumulating 3,000 hours-since-new or 3,000 hours-since-last-inspection, whichever is latest, do one of the following:
Inspect the fan case LP fuel tubes, part numbers (P/Ns) FK22617, FK19213, and FK23986. Replace the clips that hold the fuel tubes in place. Use paragraphs 3.A.(1) through 3.A.(3) (on-wing) of RR Non-modification Alert Service Bulletin (ASB) RB.211-73-AD685, Revision 6, dated February 21, 2011 to do the inspection. Replace any fan case LP fuel tubes that fail inspection.
Inspect the fan case LP fuel tubes, P/N FK22617, FK19213, and FK23986. Replace the clips that hold the fuel tubes in place with new or serviceable clips. Use paragraphs 3.B.(1) through 3.B.(3) (in-shop) of RR Non-modification ASB RB.211-73-AD685, Revision 6, dated February 21, 2011 to do the inspection. Replace any fan case LP fuel tubes that fail inspection.
Repeat the inspection required by paragraphs (f)(1) and (f)(2) of this AD and replace the clips at intervals not exceeding every 3,000 hours time-since-last-inspection.
Do not re-install any clips replaced in accordance with paragraphs (f)(1) and (f)(2) of this AD.
If you previously performed the inspection required by Revision 3 of SB RB.211-73-D685, dated August 18, 2009, or Revision 4 of SB RB.211-73-D685, dated January 20, 2010, or Revision 5 of ASB RB.211-73-AD685, dated August 18, 2010, you met the initial inspection requirements of this AD.
“Last inspection” means the last inspection of the fan case LP fuel tubes, P/Ns FK22617, FK19213, and FK23986, for frettage between the securing clips and the tube outer surface.
None.
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.
Engines
