AD 2010-17-12R1
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Deutschland Ltd & Co KG | TAY 650-15 | Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651-54 Turbofan Engines |
| engine | Rolls-Royce Deutschland Ltd & Co KG | TAY 651-54 | Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651-54 Turbofan Engines |
Unsafe Condition
Corrosion of the low-pressure turbine disks stage 2 and stage 3 due to environmental factors could cause disk failure, leading to uncontained engine failure and damage to the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the low-pressure turbine disks stage 2 and stage 3 for corrosion in accordance with RRD Alert Service Bulletin No. TAY-72-A1524, Revision 3. Comply with the applicable actions specified in the service bulletin to address corrosion findings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Rolls-Royce Deutschland Ltd & Co KG models Tay 650-15 and Tay 651-54 turbofan engines, including expanded serial numbers as specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Engine
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - 2010-17-12R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2010-17-12R1 Document Type: AD Final Rules Docket Number: FAA-2007-0037 Subject Heading: Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651...Show more Subject: Engine Status: Current Citation: Federal Register: November 3, 2010 (Volume 75, Number 212) Citation Publish Date: 11/03/2010 Effective Date: 11/18/2010 Make: Rolls-Royce Deutschland Ltd & Co KG Model: TAY 650-15 | TAY 651-54 Product Type: Engine Product Subtype: Affected AD: Superseded AD: 2010-17-12 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 8 [Federal Register: November 3, 2010 (Volume 75, Number 212)] [Rules and Regulations] [Page 67611-67613] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr03no10-5] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2007-0037; Directorate Identifier 2007-NE-41-AD; Amendment 39-16489; AD 2010-17-12R1] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651-54 Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments; revision. –––––––––––––––––––––––––––––––––– SUMMARY: The FAA is revising an existing airworthiness directive (AD) for the products listed above. This AD revision results from the need to correct the applicability paragraph of that AD, and from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Strip results from some of the engines listed in the applicability section of this AD revealed excessively corroded low-pressure turbine disks stage 2 and stage 3. The corrosion is considered to be caused by the environment in which these engines are operated. Following a life assessment based on the strip findings it is concluded that inspections for corrosion attack are required. The action specified by this European Aviation Safety Agency (EASA) AD 2008-0122 was intended to avoid a failure of a low-pressure turbine disk stage 2 or stage 3 due to potential corrosion problems which could result in uncontained engine failure and damage to the airplane. It has been later realized that the same unsafe condition could potentially occur on more serial numbers for the Tay 650-15 engines and on the Tay 651-54 engines. This AD, superseding EASA AD 2008-0122, retaining its requirements, is therefore issued to expand the Applicability in adding further engine serial numbers for the Tay 650-15 engines and in adding the Tay 651-54 engines. We are issuing this AD to detect corrosion that could cause the stage 2 or stage 3 disk of the LP turbine to fail, uncontained engine failure, and damage to the airplane. 1 DATES: This AD becomes effective November 18, 2010. We must receive comments on this AD by December 3, 2010. The Director of the Federal Register approved the incorporation by reference of RRD Alert Service Bulletin No. TAY-72-A1524, Revision 3, dated March 24, 2010, as of September 27, 2010 (75 FR 51651, August 23, 2010). ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: (202) 493-2251. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647-5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Mark Riley, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: mark.riley@faa.gov; phone: (781) 238-7758; fax: (781) 238-7199. SUPPLEMENTARY INFORMATION: Discussion On August 23, 2010, we published AD 2010-17-12, Amendment 39-16404, in the Federal Register (75 FR 51651). That AD is applicable to RRD models Tay 650-15 and Tay 651-54 turbofan engines. We discovered that the applicability paragraph of that AD is in error. This AD revision corrects that applicability paragraph. The requirements of that AD remain the same in this AD revision. FAA's Determination and Requirements of This AD This product has been approved by the aviation authority of the United Kingdom, and is approved for operation in the United States. Pursuant to our bilateral agreement with the United Kingdom, they have notified us of the unsafe condition described in the MCAI. We are issuing this AD because we evaluated all information provided by the European Aviation Safety Agency and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. FAA's Determination of the Effective Date An unsafe condition exists that requires the immediate adoption of this AD. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because this AD revision reduces the applicability, and the impact on the affected U.S. registered 2
Document Text
Show stored source text (verify against official source)
AD Final Rules - 2010-17-12R1.pdf Copy URL Document Versions Feedback DetailsAttachments/Public Comments AD Number: 2010-17-12R1 Document Type: AD Final Rules Docket Number: FAA-2007-0037 Subject Heading: Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651...Show more Subject: Engine Status: Current Citation: Federal Register: November 3, 2010 (Volume 75, Number 212) Citation Publish Date: 11/03/2010 Effective Date: 11/18/2010 Make: Rolls-Royce Deutschland Ltd & Co KG Model: TAY 650-15 | TAY 651-54 Product Type: Engine Product Subtype: Affected AD: Superseded AD: 2010-17-12 Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: Automatic Zoom Actual Size Page Fit Page Width 50% 75% 100% 125% 150% 200% 300% 400% 125% of 8 [Federal Register: November 3, 2010 (Volume 75, Number 212)] [Rules and Regulations] [Page 67611-67613] From the Federal Register Online via GPO Access [wais.access.gpo.gov] [DOCID:fr03no10-5] –––––––––––––––––––––––––––––––––– DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2007-0037; Directorate Identifier 2007-NE-41-AD; Amendment 39-16489; AD 2010-17-12R1] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce Deutschland Ltd. & Co. KG. (RRD) Models Tay 650-15 and Tay 651-54 Turbofan Engines AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments; revision. –––––––––––––––––––––––––––––––––– SUMMARY: The FAA is revising an existing airworthiness directive (AD) for the products listed above. This AD revision results from the need to correct the applicability paragraph of that AD, and from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as: Strip results from some of the engines listed in the applicability section of this AD revealed excessively corroded low-pressure turbine disks stage 2 and stage 3. The corrosion is considered to be caused by the environment in which these engines are operated. Following a life assessment based on the strip findings it is concluded that inspections for corrosion attack are required. The action specified by this European Aviation Safety Agency (EASA) AD 2008-0122 was intended to avoid a failure of a low-pressure turbine disk stage 2 or stage 3 due to potential corrosion problems which could result in uncontained engine failure and damage to the airplane. It has been later realized that the same unsafe condition could potentially occur on more serial numbers for the Tay 650-15 engines and on the Tay 651-54 engines. This AD, superseding EASA AD 2008-0122, retaining its requirements, is therefore issued to expand the Applicability in adding further engine serial numbers for the Tay 650-15 engines and in adding the Tay 651-54 engines. We are issuing this AD to detect corrosion that could cause the stage 2 or stage 3 disk of the LP turbine to fail, uncontained engine failure, and damage to the airplane. 1 DATES: This AD becomes effective November 18, 2010. We must receive comments on this AD by December 3, 2010. The Director of the Federal Register approved the incorporation by reference of RRD Alert Service Bulletin No. TAY-72-A1524, Revision 3, dated March 24, 2010, as of September 27, 2010 (75 FR 51651, August 23, 2010). ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to http://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: U.S. Department of Transportation, 1200 New Jersey Avenue, SE., West Building Ground Floor, Room W12-140, Washington, DC 20590-0001. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. • Fax: (202) 493-2251. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Operations office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647-5527) is the same as the Mail address provided in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Mark Riley, Aerospace Engineer, Engine Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; e-mail: mark.riley@faa.gov; phone: (781) 238-7758; fax: (781) 238-7199. SUPPLEMENTARY INFORMATION: Discussion On August 23, 2010, we published AD 2010-17-12, Amendment 39-16404, in the Federal Register (75 FR 51651). That AD is applicable to RRD models Tay 650-15 and Tay 651-54 turbofan engines. We discovered that the applicability paragraph of that AD is in error. This AD revision corrects that applicability paragraph. The requirements of that AD remain the same in this AD revision. FAA's Determination and Requirements of This AD This product has been approved by the aviation authority of the United Kingdom, and is approved for operation in the United States. Pursuant to our bilateral agreement with the United Kingdom, they have notified us of the unsafe condition described in the MCAI. We are issuing this AD because we evaluated all information provided by the European Aviation Safety Agency and determined the unsafe condition exists and is likely to exist or develop on other products of the same type design. FAA's Determination of the Effective Date An unsafe condition exists that requires the immediate adoption of this AD. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because this AD revision reduces the applicability, and the impact on the affected U.S. registered 2
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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