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 2005_register executive 2010-09-23 article Rules and Regulations D09002ee1c81186c9 D09002ee1c8118758 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 The FAA is adopting a new airworthiness directive (AD) for Rolls- Royce Corporation (RRC) (formerly Allison Engine Company) 250-B17B, - B17C, -B17D, -B17E, -C20, -C20B, -C20F, -C20J, -C20S, and -C20W turboprop and turboshaft engines that do not have turbine energy absorbing ring, RRC part number (P/N) 23035175, or an equivalent FAA- approved serviceable turbine energy absorbing ring, installed. This AD requires installation of a turbine energy absorbing ring in the plane of the 1st stage turbine wheel. This AD results from an unacceptable rate of uncontained 1st stage turbine wheel failures. We are issuing this AD to minimize the risk of uncontained 1st stage turbine wheel fragments from causing damage to the aircraft or damage to the second engine on twin-engine installations, which could lead to loss of control and loss of the aircraft. 70 FR 28420 https://www.govinfo.gov/app/details/FR-2005-05-18/05-9660 05-9660 fr18my05-5 RIN 2120-AA64 4910-13-P Docket No. FAA-2004-19648 Directorate Identifier 2004-NE-31-AD Amendment 39-14090 AD 2005-10-13 https://www.govinfo.gov/app/details/FR-2005-05-18/05-9660 https://www.govinfo.gov/content/pkg/FR-2005-05-18/html/05-9660.htm https://www.govinfo.gov/content/pkg/FR-2005-05-18/pdf/05-9660.pdf Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety 4 p. 28420 28423 70 FR 28420 Title 14 Part 39 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company) 250-B17B, -B17C, -B17D, -B17E, -C20, -C20B, -C20F, -C20J, -C20S, and -C20W Turboprop and Turboshaft Engines; Federal Register Vol. 70, Issue RULE 05-9660 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 2005-06-22 Docket No. FAA-2004-19648 Directorate Identifier 2004-NE-31-AD Amendment 39-14090 AD 2005-10-13 4910-13-P 05-9660 Final rule.

The FAA is adopting a new airworthiness directive (AD) for Rolls- Royce Corporation (RRC) (formerly Allison Engine Company) 250-B17B, - B17C, -B17D, -B17E, -C20, -C20B, -C20F, -C20J, -C20S, and -C20W turboprop and turboshaft engines that do not have turbine energy absorbing ring, RRC part number (P/N) 23035175, or an equivalent FAA- approved serviceable turbine energy absorbing ring, installed. This AD requires installation of a turbine energy absorbing ring in the plane of the 1st stage turbine wheel. This AD results from an unacceptable rate of uncontained 1st stage turbine wheel failures. We are issuing this AD to minimize the risk of uncontained 1st stage turbine wheel fragments from causing damage to the aircraft or damage to the second engine on twin-engine installations, which could lead to loss of control and loss of the aircraft.

This AD becomes effective June 22, 2005. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of June 22, 2005. Melissa T. Bradley, Aerospace Engineer, Chicago Aircraft Certification Office, FAA, 2300 East Devon Avenue, Des Plaines, IL 60018-4696; telephone (847) 294-8110; fax (847) 294-7834. Air Transportation Aircraft Aviation Safety Incorporation by Reference Safety Airworthiness directives: Rolls-Royce Corp., http://dms.dot.gov http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html Vol. 70, no. 95 Office of the Federal Register, National Archives and Records Administration 2005-05-18 continuing daily deposited born digital 367 p. Table of Contents: AE 2.7: GS 4.107: AE 2.106: KF70.A2 https://www.govinfo.gov/app/details/FR-2005-05-18 P0b002ee180992c74 0097-6326 0042-1219 0364-1406 769-004-00000-9 000582072 f:fr18my05 https://www.govinfo.gov/app/details/FR-2005-05-18 https://www.govinfo.gov/content/pkg/FR-2005-05-18/pdf/FR-2005-05-18.pdf https://www.govinfo.gov/content/pkg/FR-2005-05-18/xml/FR-2005-05-18.xml fdlp 28415 28771 DGPO 2010-09-23 2024-06-06 FR-2005-05-18 machine generated eng FR FR-2005-05-18 70 95