Airworthiness Directive · Amendment 39-17115 · Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
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.
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce Deutschland Ltd & Co KG (RRD) BR700-715A1-30, BR700-715B1- 30, and BR700-715C1-30 turbofan engines. This AD was prompted by the discovery of a manufacturing defect on certain part number (P/N) and serial number (S/N) low-pressure (LP) compressor booster rotors. This AD requires initial and repetitive fluorescent penetrant inspections of certain P/N and S/N LP compressor booster rotors and rework or replacement of them as terminating action to the repetitive inspections. We are issuing this AD to prevent failure of the LP compressor booster rotor, uncontained engine failure, and damage to the airplane.
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.
| 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.
(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):
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
