Airworthiness directives › 2013-26-06
AD 2013-26-06 Airworthiness Directives; Rolls-Royce Corporation Turbofan Engines
Applicability*9
This AD applies to the following Rolls-Royce Corporation (RRC) AE 3007A, A1,A1/1, A1/2, A1/3, A1P, A1E, and A3 turbofan engines: (1) With an installed high-pressure turbine (HPT) stage 2 wheel, part number (P/N) 23084520, or (2) With an installed HPT stage 2 wheel, P/N 23069438, 23069592, 23074462, 23074644, or 23075345, except for the HPT stage 2 wheel serial numbers listed in Table 2 through Table 5 of RRC Alert Service Bulletin (ASB) No. AE 3007A-A-72-414, Revision 1, dated December 5, 2012. Those HPT stage 2 wheels maintain their existing approved life limits.
Compliance
The Manager, Chicago Aircraft Certification Office, may approve alternative methods of compliance for this AD. Use the procedures 14 CFR 39.19 to make your request.
Required actions
(1) For more information about this AD, contact Kyri Zaroyiannis, Aerospace Engineer, Chicago Aircraft Certification Office, Small Airplane Directorate, FAA, 2300 E. Devon Ave., Des Plaines, IL 60018; phone: 847-294-7836; fax: 847-294-7834; email: kyri.zaroyiannis@faa.gov. (2) RRC ASB No. AE 3007A-A-72-414, Revision 1, dated December 5, 2012, which is not incorporated by reference in this AD, can be obtained from RRC, using the contact information in paragraph (g)(3) of this AD. (3) For service information identified in this AD, contact Rolls-Royce Corporation, 450 South Meridian Street, Mail Code NB-01-06, Indianapolis, IN 46225, phone: 317-230-1667; email: CMSEindyOSD@rolls-royce.com; Internet: www.rolls-royce.com. (4) You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781-238-7125.
Unsafe condition
Comply with this AD within the compliance times specified, unless already done. (1) For HPT stage 2 wheels, P/N 23069438 and P/N 23069592, do the following: (i) For HPT stage 2 wheels that have 9,500 cycles since new (CSN) or more on the effective date of this AD, remove the HPT stage 2 wheel from service within 15 cycles-in-service (CIS) after the effective date of this AD. (ii) After the effective date of this AD, do not approve for return to service any engine with an HPT stage 2 wheel, P/N 23069438 or P/N 23069592, that exceeds the new life limit of 9,500 CSN. (2) For HPT stage 2 wheels, P/N 23074462, do the following: (i) For AE 3007A1E turbofan engines with HPT stage 2 wheels installed that have 7,500 CSN or more on the effective date of this AD, and for the AE 3007A, A1, A1/1, A1/2, A1/3, A1P, and A3 turbofan engines with HPT stage 2 wheels installed that have 9,500 CSN or more on the effective date of this AD, remove the wheel from service within 15 CIS after the effective date of this AD. (ii) Thereafter: (A) Do not approve for return to service any AE 3007A1E turbofan engine with an HPT stage 2 wheel, P/N 23074462, installed, that exceeds the new life limit of 7,500 CSN; and (B) Do not approve for return to service any AE 3007A, A1, A1/1, A1/2, A1/3, A1P, and A3 turbofan engines with an HPT stage 2 wheel, P/N 23074462, installed, that exceeds the new life limit of 9,500 CSN. (C) Throughout the life of the HPT stage 2 wheel, always use the lowest life limit applicable to any engine model in which the part was used in service. If life usage records are not sufficient to identify all engine models in which the part has been flown, the lowest life applicable to any engine model for which the part is eligible must be used. (3) For HPT stage 2 wheels, P/N 23074644 and P/N 23075345, do the following: (i) For HPT stage 2 wheels that have 9,500 CSN or more on the effective date of this AD, remove the HPT stage 2 wheel from service within 15 CIS after the effective date of this AD. (ii) Thereafter, do not approve for return to service any engine with an HPT stage 2 wheel, P/N 23074644 or P/N 23075345, installed, that exceeds the new life limit of 9,500 CSN. (4) For HPT stage 2 wheels, P/N 23084520, do the following: (i) For HPT stage 2 wheels that have 23,000 CSN or more on the effective date of this AD, remove the HPT stage 2 wheel from service before the next flight after the effective date of this AD. (ii) Thereafter, do not approve for return to service any engine with an HPT stage 2 wheel, P/N 23084520, installed, that exceeds the new life limit of 23,000 CSN.
Affected ADs
This AD supersedes AD 2010-19-01, Amendment 39-16429 (75 FR 57660, September 22, 2010).
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