Airworthiness directives › 2012-14-01
AD 2012-14-01 Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
Applicability*9
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700- 715A1-30, BR700-715B1-30, and BR700-715C1-30 turbofan engines, with a low-pressure (LP) compressor booster rotor, part number (P/N) BRH19215, or P/N BRH19871, with serial numbers (S/N) 118 to 255 inclusive, installed.
Compliance
(1) For the purpose of this AD, an LP compressor booster rotor that is eligible for installation is one that is not listed in applicability paragraph (c) of this AD. (2) The Hawaiian Flight Mission referenced in Table 1 to paragraph (e) is shown in Figure 1 to paragraph (f)(2): ER14SE12.054
Required actions
The Manager, Engine Certification Office, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request.
Unsafe condition
Unless already done, do the following actions. (1) At the applicable compliance time in Table 1 to paragraph (e) of this AD, perform an initial fluorescent penetrant inspection (FPI) of the LP compressor booster rotor, in accordance with paragraphs 3.D. through 3.H.(1) (except paragraphs 3.G.(1) and 3.G.(2)) of Accomplishment Instructions of RRD Alert Non-Modification Service Bulletin No. ALERT SB-BR700-72-A900503, Revision 4, dated June 16, 2011. Table 1 to Paragraph (e)—Compliance Times Engine type of operation Initial FPI (whichever occurs later) Repetitive FPI interval (not to exceed) “Hawaiian” Flight Mission only Before accumulating 36,000 engine cycles (EC) or within 500 EC after the effective date of this AD 6,000 EC Any other rating, or combination of ratings Before accumulating 18,000 EC, or within 500 EC after the effective date of this AD 4,000 EC (2) Thereafter, at intervals not to exceed the applicable compliance time in Table 1 of this AD, perform repetitive FPIs of the LP compressor booster rotor, in accordance with paragraphs 3.D. through 3.H.(1) (except paragraphs 3.G.(1) and 3.G.(2)) of Accomplishment Instructions of RRD Alert Non-Modification Service Bulletin No. ALERT SB-BR700-72-A900503, Revision 4, dated June 16, 2011. (3) Remove cracked LP compressor booster rotors before further flight. (4) At the next piece part exposure of the LP compressor booster rotor during shop visit, remove the LP compressor booster rotor and either: (i) Rework the LP compressor booster rotor in accordance with paragraph 3.D. of Accomplishment Instructions of RRD Service Bulletin (SB) No. SB-BR700-72-101683, dated September 20, 2010; or (ii) Replace the LP compressor booster rotor with one that is eligible for installation.
Affected ADs
None.
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