Airworthiness directives › 2012-02-04
AD 2012-02-04 Airworthiness Directives; Rolls-Royce plc Turbofan Engines
Applicability*9
This AD applies to Rolls-Royce plc RB211-Trent 553-61, RB211-Trent 553A2-61, RB211-Trent 556-61, RB211-Trent 556A2-61, RB211-Trent 556B-61, RB211-Trent 556B2-61, RB211-Trent 560-61, and RB211-Trent 560A2-61 turbofan engines that have not complied with Rolls-Royce plc Service Bulletin No. RB.211-73-G723, and that have any of the following fuel tube part numbers installed: (1) FW57605. (2) FW17689. (3) FW57604. (4) FK30710. (5) FW57578. (6) FK30713.
Compliance
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Required actions
(1) For more information about this AD, contact Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; email: alan.strom@faa.gov; phone: (781) 238-7143; fax: (781) 238-7199. (2) Refer to European Aviation Safety Agency AD 2011-0243, dated December 20, 2011, for related information.
Unsafe condition
Unless already done, do the following one-time actions within 1,600 flight hours after the effective date of this AD. (1) Visually inspect the fuel tube clips holding the LP fuel tube run from the LP fuel pump to the fuel-oil-heat exchanger, and the clips holding the LP fuel tube run from the LP filter to the high-pressure (HP) fuel pump, for evidence of damage or wear and replace as necessary. Do this in accordance with paragraphs 3.A(4)(a) through 3.A(4)(c) of Rolls-Royce plc Alert Service Bulletin No. RB.211-73-AG797, dated October 26, 2011. (2) Clean and dry the LP fuel tube run from the LP fuel pump to the fuel-oil-heat exchanger, and the LP fuel tube run from the LP filter to the HP fuel pump. (i) Visually inspect for evidence of damage, wear near the clip locations, and for fuel leakage. (ii) Reject the tube and replace it if evidence of fuel leakage or contact frettage to a depth of greater than 0.1 mm (0.004 in.) on the outer surface of a bend, or 0.2 mm (0.008 in.) in any other area, is evident.
Affected ADs
None.
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