Airworthiness directives › 2013-19-21
AD 2013-19-21 Airworthiness Directives; Rolls-Royce plc Turbofan Engines
Applicability*9
This AD applies to the following Rolls-Royce plc (RR) model turbofan engines that have a high-pressure (HP) compressor stage 1 to 4 rotor disc installed, with a part number (P/N) listed in Table 1 to paragraph (c) of this AD: (1) RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61; and (2) RB211 Trent 768-60, 772-60, and 772B-60; and (3) RB211-Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17; and (4) RB211-524G2-T-19, -524G3-T-19, -524H-T-36, and -524H2-T-19. Table 1 to Paragraph ( c )—Affected HP Compressor Stage 1 to 4 Rotor Disc P/Ns by Engine Model Engine model HP Compressor stage 1 to 4 rotor disc P/N 1. RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 FK30524 or FW88340. 2. RB211 Trent 768-60, 772-60, and 772B-60 FK22745, FK24031, FK23313, FK25502, FK26185, FK32129, FW20195, FW20196, FW20197, FW20638, FW23711, FW88695, FW88696, FW88697, FW88698, FW88699, FW88700, FW88701, FW88702, or FW88703. 3. RB211 Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 FK24009, FK26167, FK32580, FW11590, FW61622, FW88723, FW88724, or FW88725. 4. RB211-524G2-T-19, -524G3-T-19, -524H-T-36, and -524H2-T-19 FK25502, FW20195, FW23711, FW88695, FW88696, or FW88697.
Compliance
(1) Clean and perform a fluorescent-penetrant inspection of the HP compressor stage 1 to 4 rotor disc at the first shop visit after accumulating 1,000 cycles since new (CSN) on the stage 1 to 4 rotor disc or at the next shop visit after the effective date of this AD, whichever occurs later. (2) Use paragraphs 3.A. through 3.E.(11) of the Accomplishment Instructions of RR Alert Non-Modification Service Bulletin (NMSB) No. RB.211-72-AF964, Revision 3, dated January 11, 2013, to do the cleaning and inspection. (3) Thereafter, at every engine shop visit, clean and inspect as required by paragraph (f)(2) of this AD. (4) If on the effective date of this AD, an engine with an affected part has 1,000 CSN or more, and is in the shop, clean and inspect as required by paragraph (f)(2) of this AD before returning the engine to service. (5) If cracks or anomalies are found during the inspection required by paragraph (f)(2) of this AD, accomplish the applicable corrective actions before returning the engine to service.
Required actions
For the purpose of this AD, an “engine shop visit” is whenever the HP compressor rotor is accessible and the compressor blades have been removed.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done.
Affected ADs
This AD supersedes AD 2012-04-13, Amendment 39-16969 (77 FR 13483, March 7, 2012).
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