United States Government Publishing Office publisher pbl distributor dst United States National Archives and Records Administration Office of the Federal Register author aut Government Organization text government publication eng FR Regulatory Information 2011_register executive 2011-10-27 article Proposed Rules D09002ee1c7ff20a0 D09002ee1c7ff212f United States Department of Transportation originator org United States Government Agency or Subagency United States Federal Aviation Administration originator org United States Government Agency or Subagency We propose to supersede an existing airworthiness directive (AD) that applies to all RR RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines. The existing AD currently requires performing initial and repetitive visual and fluorescent penetrant inspections (FPI) of the low-pressure (LP) turbine stage 1, 2, and 3 discs to detect cracks in the discs. Since we issued that AD, we determined that the definition of shop visit is too restrictive in the existing AD. This proposed AD would continue to require those inspections and would change the definition of a shop visit to be less restrictive. We are proposing this AD to correct the definition of shop visit, and to detect cracks in the LP turbine stage 1, 2, and 3 discs, which could result in an uncontained release of LP turbine blades and damage to the airplane. 76 FR 65997 https://www.govinfo.gov/app/details/FR-2011-10-25/2011-27512 2011-27512 fr25oc11-25 RIN 2120-AA64 4910-13-P Docket No. FAA-2009-0994 Directorate Identifier 2009-NE-39-AD https://www.govinfo.gov/app/details/FR-2011-10-25/2011-27512 https://www.govinfo.gov/content/pkg/FR-2011-10-25/html/2011-27512.htm https://www.govinfo.gov/content/pkg/FR-2011-10-25/pdf/2011-27512.pdf Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety 3 p. 65997 65999 76 FR 65997 Title 14 Part 39 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc (RR) RB211-535 Series Turbofan Engines; Federal Register Vol. 76, Issue PRORULE 2011-27512 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 2011-12-27 Docket No. FAA-2009-0994 Directorate Identifier 2009-NE-39-AD 4910-13-P 2011-27512 Notice of proposed rulemaking (NPRM).

We propose to supersede an existing airworthiness directive (AD) that applies to all RR RB211-535E4-37, -535E4-B-37, -535E4-B-75, and -535E4-C-37 turbofan engines. The existing AD currently requires performing initial and repetitive visual and fluorescent penetrant inspections (FPI) of the low-pressure (LP) turbine stage 1, 2, and 3 discs to detect cracks in the discs. Since we issued that AD, we determined that the definition of shop visit is too restrictive in the existing AD. This proposed AD would continue to require those inspections and would change the definition of a shop visit to be less restrictive. We are proposing this AD to correct the definition of shop visit, and to detect cracks in the LP turbine stage 1, 2, and 3 discs, which could result in an uncontained release of LP turbine blades and damage to the airplane.

We must receive comments on this proposed AD by December 27, 2011. Alan Strom, Aerospace Engineer, Engine Certification Office, FAA, 12 New England Executive Park, Burlington, MA 01803; phone: 781-238-7143; fax: 781-238-7199; e-mail: alan.strom@faa.gov. Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety Airworthiness Directives: Rolls-Royce plc (RR) RB211535 Series Turbofan Engines , alan.strom@faa.gov http://www.regulations.gov http://www.rolls-royce.com/contact/civil_team.jsp http://www.rollsroyce.com/contact/civil_team.jsp https://www.aeromanager.com Vol. 76, no. 206 Office of the Federal Register, National Archives and Records Administration 2011-10-25 continuing daily deposited born digital 250 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2011-10-25 P0b002ee180eb8184 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr25oc11 https://www.govinfo.gov/app/details/FR-2011-10-25 https://www.govinfo.gov/content/pkg/FR-2011-10-25/pdf/FR-2011-10-25.pdf https://www.govinfo.gov/content/pkg/FR-2011-10-25/xml/FR-2011-10-25.xml fdlp 65927 66167 DGPO 2011-10-27 2024-06-03 FR-2011-10-25 machine generated eng FR FR-2011-10-25 76 206