Source: https://www.federalregister.gov/articles/2006/05/17/06-4543/airworthiness-directives-bae-systems-operations-limited-model-bae-146-airplanes-and-model-avro
Timestamp: 2016-07-23 21:10:12
Document Index: 419383664

Matched Legal Cases: ['art 39', 'art 1', 'art 2', 'art 2', 'art 1', '§ 39', 'art 1', 'art 51']

Federal Register | Airworthiness Directives; BAE Systems (Operations) Limited Model BAe 146 Airplanes and Model Avro 146-RJ Airplanes
Dates: This AD becomes effective June 21, 2006.
-28565 (3 pages)
Document Number: 06-4543
Shorter URL: https://federalregister.gov/a/06-4543 Related Topics
The FAA is adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model BAe 146 airplanes and Model Avro 146-RJ airplanes. This AD requires repetitive replacement of the elevator servo tab hinge bearings, elevator servo tab mechanism bearings, elevator trim tab hinge bearings, and elevator trim tab drive rod bearings with new bearings. This AD results from reported incidents of flight control surface restrictions due to the deterioration of flight control surface bearings. We are issuing this AD to prevent corrosion of flight control surface bearings and freezing of moisture inside the bearings, due to loss of lubrication in the bearings, which could lead to flight control restrictions and result in reduced controllability of the airplane.
Request To Reference Revision 1 of Service Bulletin
Request To Identify the Part Numbers of Certain Bearings
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of June 21, 2006.
Contact British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, VA 20171, for service information identified in this AD.
Dan Rodina, Aerospace Engineer, International Branch, ANM-116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, WA 98055-4056; telephone (425) 227-2125; fax (425) 227-1149.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 to include an AD that would apply to all BAE Systems (Operations) Limited Model BAe 146 airplanes and Model Avro 146-RJ airplanes. That NPRM was published in the Federal Register on December 8, 2005 (70 FR 72938). That NPRM proposed to require repetitive replacement of the elevator servo tab hinge bearings, elevator servo tab mechanism bearings, elevator trim tab hinge bearings, and elevator trim tab drive rod bearings with new bearings.
Request To Reference Revision 1 of Service Bulletin Back to Top
Air Wisconsin Airlines requests that we reference Revision 1 of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.27-177, dated October 5, 2005, as the appropriate source of service information for accomplishing the actions in the NPRM. We referenced the original issue of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.27-177, dated June 3, 2004, in the NPRM. The commenter states that Revision 1 of the service bulletin is divided into two parts, where the actions proposed in the NPRM are specified in Part 1 of the service bulletin and other actions—not related to the NPRM—are specified Part 2. The commenter also states that Revision 1 corrects a typo to a certain part number.
We agree. We have reviewed Revision 1 of the service bulletin and have determined that the procedures in Revision 1 are identical to those specified in the original issue of the service bulletin. The actions specified in Part 2 of the Accomplishment Instructions of Revision 1 are identical to other actions specified in the original issue of the service bulletin that are not required for addressing the unsafe condition of this AD. (Those actions also were not mandated by British airworthiness directive G-2005-0014, dated May 31, 2005.) Therefore, we have revised paragraph (f) of this AD to reference only Part 1 of the Accomplishment Instructions of Revision 1. We have also added a new paragraph (g) to this AD to give credit for actions done in accordance with the original issue of the service bulletin; we have reidentified the subsequent paragraphs in this AD accordingly.
Request To Identify the Part Numbers of Certain Bearings Back to Top
Modification and Replacement Parts Association (MARPA) requests that we either publish the referenced service bulletin with the AD, or incorporate by reference (IBR) it with the NPRM. If we IBR rather than publish the referenced service bulletin, then MARPA further requests that we identify the manufacturer and part numbers of the affected bearings in this AD. Unless we specify this information in the AD, MARPA states that there is no practical method for determining whether alternative parts to the affected bearings exist (under 14 CFR 21.303) without obtaining the necessary proprietary service bulletin.
MARPA also comments on our practice of IBR and referencing proprietary service information. MARPA asserts that if we IBR proprietary service information with a public document, such as an AD, then that service information loses its protected copyright status and becomes a public document. MARPA also claims that IBR requires we provide a copy of the relevant service information to the Director of the Federal Register before the NPRM can be published. MARPA further states that: “Merely referencing a service document without incorporation thus becomes an ‘end run’ around the publication requirement while still requiring possession of a proprietary document in order to comply with the law.” MARPA believes our practice of IBR is flawed legally.
We do not agree to specify the affected part numbers in this AD. It is our general practice to reference the appropriate service information, since the affected part numbers are clearly specified in the referenced information. Not only does it appear redundant to repeat part numbers in an AD, but if there was a large number of parts involved, it would increase the risk of error in repeating those part numbers in an AD. We are currently in the process of reviewing issues surrounding the posting of service bulletins on the Department of Transportation's Docket Management System (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. To delay this AD would be inappropriate, since we have determined that an unsafe condition exists and that replacement of certain parts must be accomplished to ensure continued safety. Therefore, no change has been made to the final rule in this regard.
This AD affects about 21 airplanes of U.S. registry. The actions in this AD take about 75 work hours per airplane, at an average labor rate of $65 per work hour. Required parts cost about $3,192 per airplane. Based on these figures, the estimated cost of the AD for U.S. operators is $169,407, or $8,067 per airplane, per replacement cycle.
2.The Federal Aviation Administration (FAA) amends § 39.13 by adding the following new airworthiness directive (AD): 2006-10-12BAE Systems (Operations) Limited (Formerly British Aerospace Regional Aircraft): Amendment 39-14596. Docket No. FAA-2005-23215; Directorate Identifier 2005-NM-212-AD.
Repetitive Replacement Back to Top
(f) Before the accumulation of 96 months on a bearing since new, or within 16 months after the effective date of this AD, whichever is later: Replace the elevator servo tab hinge bearings, the elevator servo tab mechanism bearings, elevator trim tab hinge bearings, and elevator trim tab drive rod bearings with new bearings, in accordance with Part 1 of the Accomplishment Instructions of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.27-177, Revision 1, dated October 5, 2005. Repeat the replacements thereafter at intervals not to exceed 96 months.
Credit for Previous Service Bulletin Back to Top
(g) Actions done before the effective date of this AD in accordance with BAE Systems (Operations) Limited Inspection Service Bulletin ISB.27-177, dated June 3, 2004, are acceptable for compliance with the requirements of paragraph (f) of this AD.
(i) British airworthiness directive G-2005-0014, dated May 31, 2005, also addresses the subject of this AD.
(j) You must use BAE Systems (Operations) Limited Inspection Service Bulletin ISB.27-177, Revision 1, dated October 5, 2005, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of this document in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact British Aerospace Regional Aircraft American Support, 13850 Mclearen Road, Herndon, Virginia 20171, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
[FR Doc. 06-4543 Filed 5-16-06; 8:45 am]