Federal Register / Vol. 70, No. 119 / Wednesday, June 22, 2005 / Rules and Regulations 35989 2005–13–02 Bombardier, Inc. (Formerly Affected ADs Summary 670T11508 or Bombardier Service Canadair): Amendment 39–14138. (b) None. Bulletin 670BA–29–008, dated March 12, Docket No. FAA–2004–19754; Applicability: (c) This AD applies to the 2004, or Revision A, dated May 5, 2004; has Directorate Identifier 2004–NM–181–AD. airplanes listed in Table 1 of this AD, been incorporated in production. Effective Date certificated in any category, excluding those (a) This AD becomes effective July 27, airplanes on which Modification Summaries 2005. 670T00494 or 670T11944; and Modification TABLE 1.—APPLICABILITY Bombardier model Serial numbers (1) CL–600–2C10 (Regional Jet Series 700 & 701) series airplanes .................................................................. 10003 through 10999 inclusive. (2) CL–600–2D24 (Regional Jet Series 900) series airplanes ............................................................................. 15001 through 15990 inclusive. Unsafe Condition (1) Before further flight, repair the crack in Bombardier, Inc., Canadair, Aerospace (d) This AD was prompted by reports of accordance with a method approved by Group, P.O. Box 6087, Station Centre-ville, hydraulic pressure loss in either the number either the Manager, New York Aircraft Montreal, Quebec H3C 3G9, Canada. To view 1 or number 2 hydraulic system due to Certification Office (ACO), FAA; or Transport the AD docket, contact the Docket breakage or leakage of hydraulic lines in the Canada Civil Aviation (TCCA) (or its Management Facility, U.S. Department of aft equipment bay and reports of cracks on delegated agent). Transportation, 400 Seventh Street SW., the aft pressure bulkhead web around these (2) At the applicable time specified in room PL–401, Nassif Building, Washington, feed-through holes. We are issuing this AD to paragraph (h)(2)(i) or (h)(2)(ii) of this AD, DC. To review copies of the service prevent loss of hydraulic pressure, which revise the Airworthiness Limitations section information, go to the National Archives and could result in reduced controllability of the of the Instructions of Continued Records Administration (NARA). For airplane, and to detect and correct cracks on Airworthiness by inserting a copy of the information on the availability of this the aft pressure bulkhead web, which could inspection requirements for the repair material at the NARA, call (202) 741–6030, result in reduced structural integrity of the required by paragraph (h)(1) of this AD into or go to http://www.archives.gov/ aft pressure bulkhead. Section 1.4, Part 2 (Airworthiness federal_register/code_of_federal Compliance: (e) You are responsible for Limitations), of Bombardier Regional Jet _regulations/ibr_locations.html. having the actions required by this AD Model CL–600–2C10 and CL–600–2D24 Maintenance Requirements Manual, CSP B– Issued in Renton, Washington, on June 10, performed within the compliance times 2005. specified, unless the actions have already 053. Thereafter, except as provided in been done. paragraph (i) of this AD, no alternative Michael Kaszycki, structural inspection intervals may be Acting Manager, Transport Airplane Revision of Airworthiness Limitations approved for this aft pressure bulkhead and Directorate, Aircraft Certification Service. Section pylon pressure pan in the vicinity of the [FR Doc. 05–12000 Filed 6–21–05; 8:45 am] hydraulic fittings, and the hydraulic tube (f) Within 30 days after the effective date BILLING CODE 4910–13–P of this AD, revise the Airworthiness adapters. Limitations section of the Instructions of (i) If the repair required by paragraph (h)(1) Continued Airworthiness by inserting a copy of this AD is done after the effective date of of the new repetitive inspections and an this AD: Revise the Airworthiness DEPARTMENT OF TRANSPORTATION optional terminating action of Bombardier Limitations section within 12 months after CRJ 700/900 Series Temporary Revision (TR) the repair. Federal Aviation Administration MRM2–129, dated June 1, 2004, into Section (ii) If the repair required by paragraph 1.4, Part 2 (Airworthiness Limitations), of (h)(1) of this AD was accomplished before the 14 CFR Part 39 effective date of this AD: Revise the Bombardier Regional Jet Model CL–600–2C10 [Docket No. FAA–2004–19678; Directorate and CL–600–2D24 Maintenance Airworthiness Limitations section within 12 Identifier 2004–NM–62–AD; Amendment 39– Requirements Manual, CSP B–053. months after the repair or 30 days after the 14141; AD 2005–13–05] Thereafter, except as provided in paragraph effective date of this AD, whichever occurs (h)(2) or (i) of this AD, no alternative later. RIN 2120–AA64 structural inspection intervals may be Alternative Methods of Compliance approved for this aft pressure bulkhead and (AMOCs) Airworthiness Directives; Boeing pylon pressure pan in the vicinity of the Model 747–400F Series Airplanes hydraulic fittings and the hydraulic tube (i) The Manager, New York ACO, FAA, has adapters. the authority to approve AMOCs for this AD, AGENCY: Federal Aviation (g) When the information in TR MRM2– if requested in accordance with the Administration (FAA), Department of 129, dated June 1, 2004, is included in the procedures found in 14 CFR 39.19. Transportation (DOT). general revisions of the Maintenance Related Information Requirement Manual, the general revisions ACTION: Final rule. may be inserted into the Airworthiness (j) Canadian airworthiness directive CF– SUMMARY: Limitations section of the Instructions of 2004–14, dated July 20, 2004, also addresses The FAA is adopting a new Continued Airworthiness and this TR may be the subject of this AD. airworthiness directive (AD) for certain removed. Boeing Model 747–400F series Material Incorporated by Reference airplanes. This AD requires initial Corrective Action (k) You must use Bombardier CRJ 700/900 detailed and open-hole high frequency (h) If any crack is found during any Series Temporary Revision MRM2–129, eddy current inspections for cracking of inspection done in accordance with dated June 1, 2004, to perform the actions the web, upper chord, and upper chord that are required by this AD, unless the AD Bombardier CRJ 700/900 Series TR MRM2– strap of the upper deck floor beams, and 129, dated June 1, 2004, or the same specifies otherwise. The Director of the inspection specified in the general revisions Federal Register approves the incorporation repair of any cracking. This AD also of the Maintenance Requirement Manual, do by reference of this document in accordance requires a preventive modification of the actions specified in paragraphs (h)(1) and with 5 U.S.C. 552(a) and 1 CFR part 51. To the upper deck floor beams, and (h)(2) of this AD. get copies of the service information, contact repetitive inspections for cracking after VerDate jul<14>2003 15:52 Jun 21, 2005 Jkt 205001 PO 00000 Frm 00005 Fmt 4700 Sfmt 4700 E:\FR\FM\22JNR1.SGM 22JNR1 35990 Federal Register / Vol. 70, No. 119 / Wednesday, June 22, 2005 / Rules and Regulations accomplishing the modification. This disposition. You can examine the AD inspections for cracking of the web, AD is prompted by reports of fatigue docket on the Internet at http:// upper chord, and upper chord strap of cracking found on the upper deck floor dms.dot.gov, or in person at the Docket the upper deck floor beams, and repair beam to frame attachment points. We Management Facility office between 9 of any cracking. That action also are issuing this AD to prevent fatigue a.m. and 5 p.m., Monday through proposed to require a preventive cracks in the upper chord, upper chord Friday, except Federal holidays. The modification of the upper deck floor strap, and the web of the upper deck Docket Management Facility office beams, and repetitive inspections for floor beams and resultant failure of the (telephone (800) 647–5227) is located on cracking after accomplishing the floor beams. Failure of a floor beam the plaza level of the Nassif Building at modification. could result in damage to critical flight the U.S. Department of Transportation, Comments control cables and wire bundles that 400 Seventh Street SW., room PL–401, pass through the floor beam, and Washington, DC. This docket number is We provided the public the consequent loss of controllability of the FAA–2004–19678; the directorate opportunity to participate in the airplane. Failure of the floor beam also identifier for this docket is 2004–NM– development of this AD. No comments could result in the failure of the 62–AD. have been submitted on the proposed AD or on the determination of the cost adjacent fuselage frames and skin, and FOR FURTHER INFORMATION CONTACT: Ivan to the public. consequent rapid decompression of the Li, Aerospace Engineer, Airframe airplane. Branch, ANM–120S, FAA, Seattle Conclusion DATES: This AD becomes effective July Aircraft Certification Office, 1601 Lind We have carefully reviewed the 27, 2005. Avenue, SW., Renton, Washington available data and determined that air The incorporation by reference of a 98055–4056; telephone (425) 917–6437; safety and the public interest require certain publication listed in the AD is fax (425) 917–6590. adopting the AD as proposed. approved by the Director of the Federal SUPPLEMENTARY INFORMATION: The FAA Register as of July 27, 2005. proposed to amend 14 CFR part 39 with Costs of Compliance ADDRESSES: For service information an AD for certain Boeing Model 747– This AD affects about 53 airplanes identified in this AD,