Source: https://www.federalregister.gov/documents/2007/01/22/E7-687/airworthiness-directives-rolls-royce-deutschland-ltd-and-co-kg-dart-528-529-532-535-542-and-555
Timestamp: 2017-11-18 01:09:36
Document Index: 287696148

Matched Legal Cases: ['art 528', 'art 528', 'art 528', 'art 39', 'art 528', 'art 528', 'art 528', 'art 51']

Federal Register :: Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Dart 528, 529, 532, 535, 542, and 555 Series Turboprop Engines
Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Dart 528, 529, 532, 535, 542, and 555 Series Turboprop Engines
A Rule by the Federal Aviation Administration on 01/22/2007
This AD becomes effective February 26, 2007. The Director of the Federal Register approved the incorporation by reference of certain publications listed in the regulations as of February 26, 2007.
2610-2612 (3 pages)
Amendment 39-14894
AD 2007-02-07
Request To Incorporate by Reference and Publish the SBs
Change in Compliance Date
IPT Disk and HPT/IPT Disk Seal Arm Inspections
https://www.federalregister.gov/d/E7-687 https://www.federalregister.gov/d/E7-687
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) Dart 528, 529, 532, 535, 542, and 555 series turboprop engines. This AD requires a dimensional inspection of the intermediate pressure turbine (IPT) disk or an ultrasonic inspection of the seal arm contact between the high pressure turbine (HPT) and the IPT disk seal arm and rework or replacement of the IPT disk if wear outside acceptable limits is found. This AD results from reports of a number of HPT disk failures, some of which resulted in portions of the HPT disk being released. We are issuing this AD to prevent HPT disk failure, which can result in an uncontained engine failure and damage to the airplane.
The FAA proposed to amend 14 CFR part 39 with a proposed AD. The proposed AD applies to RRD Dart 528, 529, 532, 535, 542, and 555 series turboprop engines. We published the proposed AD in the Federal Register on July 11, 2006 (71 FR 39023). That action proposed to require a dimensional inspection of the IPT disk or an ultrasonic inspection of the seal arm contact between the HPT and the IPT disk seal arm and rework or replacement of the IPT disk if wear outside acceptable limits is found.
One commenter, the Modification and Replacement Parts Association (MARPA), requests that we incorporate by reference (IBR) the SBs referenced in the proposed AD. We agree. This final rule AD IBRs the documents necessary for accomplishing the requirements mandated by this AD. We did not change the AD.
MARPA also requests that we publish those SBs that we IBR, in Docket File FAA-2006-24825 of the Docket Management System (DMS). We are reviewing issues surrounding posting of service bulletins on the DMS as part of an AD docket. Once we have thoroughly examined all aspects of this issue and have made a final determination, we will consider whether our current practice needs to be revised. No change to the final rule is necessary in response to this comment.Start Printed Page 2611
We found it necessary to change the compliance date in paragraph (f)(2)(i), which requires performing a dimensional inspection and repairing or replacing the IPT disk, if necessary. We changed the date from December 30, 2006, to June 30, 2007.
We estimate that this AD will affect 30 RRD Dart 528, 529, 532, 535, 542, and 555 series turboprop engines installed on airplanes of U.S. registry. We also estimate that it will take about 50 work-hours per engine to perform the actions, and that the average labor rate is $80 per work-hour. Required parts will cost about $50,000 per IPT disk. We estimate that 25 percent, or eight engines, will require IPT disk replacement. Based on these figures, we estimate the total cost of the AD to U.S. operators to be $500,000.
2007-02-07 Rolls-Royce Deutschland Ltd & Co KG (formerly Rolls-Royce plc): Amendment 39-14894. Docket No. FAA-2006-24825; Directorate Identifier 2006-NE-17-AD.
(a) This airworthiness directive (AD) becomes effective February 26, 2007.
(c) This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) Dart 528, 529, 532, 535, 542, and 555 series turboprop engines. These engines are installed on, but not limited to, Hawker Siddeley, Argosy AW.650, Fairchild Hiller F-27, F-27A, F-27B, F-27F, F-27G, F-27J, FH-227, FH-227B, FH-227C, FH-227D, FH-227E, Fokker F.27 all marks; British Aircraft Corporation Viscount 744, 745D and 810; and Gulfstream G-159 airplanes.
(i) If wear is outside allowable limits, before June 30, 2007, perform a dimensional inspection and repair or replace the IPT disk, if necessary. Use paragraph 3 of the Accomplishment Instructions of RRD SB Da72-538, dated June 10, 2005.
(ii) If wear is within allowable limits, perform a dimensional inspection of the IPT disk at the next engine shop visit or at next overhaul, whichever occurs first and repair or replace the IPT disk, if necessary. Use paragraph 3 of the Accomplishment Instructions of RRD SB Da72-538, dated June 10, 2005.
(j) You must use the Rolls-Royce Deutschland Ltd & Co KG service information specified in Table 1 to perform the actions required by this AD. The Director of the Federal Register approved the incorporation by reference of the documents listed in Table 1 of this AD in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Rolls-Royce Deutschland Ltd & Co KG, Eschenweg 11, D-15827 Dahlewitz, Germany; telephone 49 (0) 33-7086-1768; fax 49 (0) 33-7086-3356 for a copy of this service information. You may review copies at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, Start Printed Page 2612or go to: http://www.archives.gov/​federal-register/​cfr/​ibr-locations.html.
Da72-536 Total Pages: 23 All 1 August 25, 2003.
Da72-538 Total Pages: 21 All Original June 10, 2005.
[FR Doc. E7-687 Filed 1-19-07; 8:45 am]