Airworthiness Directive · Amendment 39-16244 · Rolls-Royce plc RB211-Trent 500, 700, and 800 Series Turbofan Engines
Rolls-Royce plc RB211-Trent 500, 700, and 800 Series Turbofan Engines
This AD applies to:
(1) Rolls-Royce plc models RB211-Trent 553-61, 556-61, 556B-61, 560-61, 553A2-61, 556A2-61, 556B2-61, and 560A2-61 turbofan engines with fuel-to-oil heat exchangers (FOHEs) part number (P/N) 55027001-1 or 55027001-11 installed; and
(2) Rolls-Royce plc models RB211-Trent 768-60, 772-60, 772B-60, and RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 turbofan engines with FOHEs P/N 55003001-1 or 55003001-11 installed.
(3) The RB211-Trent 500 series engines are installed on, but not limited to, Airbus A340-500 and -600 series airplanes. The RB211-Trent 700 series engines are installed on, but not limited to, Airbus A330-200 and -300 series airplanes. The RB211-Trent 800 series engines are installed on, but not limited to, Boeing 777 series airplanes.
The FAA is superseding an existing airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product, and results from the risk of engine fuel-to-oil heat exchanger (FOHE) blockage. The MCAI describes the unsafe condition as:
For RB211-Trent 500 series turbofan engines and RB211-Trent 700 series turbofan engines, unless already done, within 6,000 flight hours after the effective date of this AD, or before January 1, 2011, whichever occurs first, do the following:
(1) For RB211-Trent 500 series turbofan engines, replace the FOHE P/N 55027001-1 or 55027001-11, with an FOHE that incorporates the modifications specified in Rolls-Royce plc Alert Service Bulletin (ASB) No. RB.211-79-AG346, dated October 23, 2009.
(2) For RB211-Trent 700 series turbofan engines, replace the FOHE, P/N 55003001-1 or 55003001-11, with an FOHE that incorporates the modifications specified in Rolls-Royce plc ASB No. RB.211-79-AG338, Revision 1, dated December 2, 2009.
(f) For RB211-Trent 800 series turbofan engines, unless already done, replace the FOHE, P/N 55003001-1 or 55003001-11, with an FOHE that incorporates the modifications specified in Rolls-Royce plc ASB No. RB.211-79-AG257, Revision 1, dated September 14, 2009 within 6,000 flight hours from January 4, 2010 (the effective date of FAA AD 2009-24-05), or before January 1, 2011, whichever comes first.
This AD differs from the Mandatory Continuing Airworthiness Information (MCAI) by requiring replacing the FOHE within 6,000 flight hours after the effective date of this AD for RB211-Trent 500 and RB211-Trent 700 series turbofan engines or January 4, 2010 for RB211-Trent 800 series turbofan engines, rather than within 6,000 flight hours from July 10, 2009.
For RB211-Trent 700 series engines, replacement of the FOHE with an FOHE that incorporates the modifications specified in Rolls-Royce plc ASB No. RB.211-79-AG338, dated September 29, 2009, complies with the replacement requirement specified in paragraph (e)(2) of this AD.
(i) For RB211-Trent 800 series engines, replacement of the FOHE with an FOHE that incorporates the modifications specified in Rolls-Royce plc ASB No. RB.211-79-AG257, dated June 24, 2009, complies with the replacement requirement specified in paragraph (f) of this AD.
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.
