AD 2011-13-06 Airworthiness Directives; Bombardier, Inc. Model DHC-8-400 Series Airplanes

Models named: DHC-8-400, -401, -402. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category; with serial numbers (S/N) 4003, 4004, 4006, and 4008 through 4205 inclusive.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Actions Applicable to Airplanes Having S/N 4003, 4004, 4006 & 4008 through 4118 (g) For airplanes having S/Ns 4003, 4004, 4006, and 4008 through 4118 inclusive: Within 6,000 flight hours after the effective date of this AD, incorporate the modifications required in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, as applicable. (1) Incorporate Bombardier Modsum 4-126330, “Fuel Tank System Design Left and Right Side (SFAR 88) Retrofit,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-57-09, Revision B, dated September 3, 2008. (2) Incorporate Bombardier Modsum 4-126366, “Fuel Tank System and Fuel Indication—Wiring Identification, Segregation and Installation (High Level Sensor and Fuel Quantity Indication)—Retrofit,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-28-04, Revision B, dated October 21, 2009. (3) For airplanes on which Bombardier Modsum 4-302000, “Standard Option—APU Installation,” has been installed: Incorporate Bombardier Modsum 4-901425, “Fuel Feed to APU—Replacement of Couplings in Center Wing Left Side—SFAR 88,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-28-05, dated June 28, 2006. (h) For airplanes having S/Ns 4003, 4004, 4006, and 4008 through 4118 inclusive, do Bombardier Fuel System Limitation (FSL) Task 284000-417 (Functional Check of the Fuel Tank Components and Plumbing Lines for Electrical Bonding) contained in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, at the applicable times specified in paragraphs (h)(1) and (h)(2) of this AD. Where the task specifies contacting Bombardier for technical assistance, this AD requires repairs/rework actions in accordance with a method approved by the Manager, New York Aircraft Certification Office (ACO), FAA, or Transport Canada Civil Aviation (TCCA) (or its delegated agent). (1) Except as provided in paragraphs (h)(1)(i) and (h)(1)(ii) of this AD, for airplanes that have incorporated either Bombardier Modsum 4-126330 or 4-901425 prior to the effective date of this AD: Do Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, within 6,000 flight hours after the effective date of this AD. (i) Airplanes on which Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, was successfully completed after incorporation of Bombardier Modsum 4-126330 or 4-901425 do not need to comply with the requirements of paragraph (h) of this AD. (ii) Airplanes on which Bombardier Modsum 4-126330 or 4-901425 was incorporated during manufacturing of the airplane do not need to comply with the requirements of paragraph (h) of this AD. (2) For airplanes on which neither Bombardier Modsum 4-126330 nor 4-901425 were incorporated before the effective date of this AD: Do Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, upon completion of the incorporation of Bombardier Modsum 4-126330 and, if applicable, Bombardier Modsum 4-901425. Actions Applicable to Airplanes S/N 4003, 4004, 4006 & 4008 Through 4118 Inclusive, Manufactured Before September 21, 2005 (i) For airplanes having S/N 4003, 4004, 4006, and 4008 through 4118 inclusive, on which the date of issuance of the original Canadian standard airworthiness certificate or the date of issuance of the original Canadian export certificate of airworthiness is before September 21, 2005: Within 6,000 flight hours after the effective date of this AD, incorporate Bombardier Modsum 4-126370, “Fuel Tank System—Enhance Protective Covering for Electrical Cable Assembly,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-28-03, Revision C, dated May 15, 2009. Actions Applicable to Airplanes S/N 4003, 4004, 4006 & 4008 Through 4118 Inclusive, Manufactured on or After September 21, 2005 (j) For airplanes having S/Ns 4003, 4004, 4006, and 4008 through 4118 inclusive, on which the date of issuance of the original Canadian standard airworthiness certificate or the date of issuance of the original Canadian export certificate of airworthiness is on or after September 21, 2005: Within 12,000 flight hours after the effective date of this AD, incorporate Bombardier Modsum 4-126370, “Fuel Tank System—Enhance Protective Covering for Electrical Cable Assembly,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-28-03, Revision C, dated May 15, 2009. Actions Applicable to Airplanes S/N 4119 Through 4205 Inclusive (k) For airplanes having S/N 4119 through 4205 inclusive: Within 6,000 flight hours after the effective date of this AD, incorporate Bombardier Modsum 4-113580, “Fuel Indication—High Level Sensor—Application of Sealant to Exposed End of Sensor Terminal Block Screws—Special Inspection and Rectification,” by doing all the applicable actions in the Accomplishment Instructions of Bombardier Service Bulletin 84-28-07, dated August 1, 2008. Credit for Actions Accomplished in Accordance With Previous Service Information (l) Incorporation of Bombardier Modsum 4-126330 prior to the effective date of this AD according to the instructions contained in Bombardier Service Bulletin 84-57-09, Revision A, dated March 19, 2007, meets the requirements of paragraph (g)(1) of this AD. (m) Incorporation of Bombardier Modsum 4-126366 prior to the effective date of this AD according to the instructions contained in Bombardier Service Bulletin 84-28-04, dated June 29, 2006; or Revision A, dated November 15, 2006; meets the requirements of paragraph (g)(2) of this AD. (n) Incorporation of Bombardier Modsum 4-126370 prior to the effective date of this AD according to instructions contained in Bombardier Service Bulletin 84-28-03, Revision B, dated October 18, 2006, meets the requirements of paragraphs (i) and (j) of this AD. FAA AD Differences Note 1: This AD differs from the MCAI and/or service information as follows: The MCAI specifies to do Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, but does not specify what to do if the functional check finds that measured resistance exceeds the specified values. This AD requires contacting the Manager, New York ACO, FAA, or TCCA (or its delegated agent) for repair/rework instructions. Other FAA AD Provisions (o) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, ANE-170, New York ACO, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone 516-228-7300; fax 516-794-5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. Related Information (p) Refer to MCAI Canadian Airworthiness Directive CF-2010-31, dated September 3, 2010; Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7; and the Bombardier service bulletins identified in Table 1 of this AD; for related information. Table 1—Relevant Service Information Bombardier service bulletin— Revision— Dated— 84-28-03 C May 15, 2009. 84-28-04 B October 21, 2009. 84-28-05 Original June 28, 2006. 84-28-07 Original August 1, 2008. 84-57-09 B September 3, 2008. Material Incorporated by Reference (q) You must use Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, and the service information contained in Table 2 of this AD, as applicable, to do the actions required by this AD, unless the AD specifies otherwise. The revision level for Bombardier Task 284000-417 in Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, is specified only on the title page and page 1 of the record of Revisions of that document. Page 4 of Section 4-1, Fuel System Limitations, of Part 2—Airworthiness Limitation Items, Revision 5, dated April 21, 2010, of Bombardier Q400 Dash 8 Maintenance Requirements Manual, PSM 1-84-7, is not listed in the Table of Contents of that document. (1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51. (2) For service information identified in this AD, contact Bombardier, Inc., 400 Côte-Vertu Road West, Dorval, Québec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; e-mail thd.qseries@aero.bombardier.com; Internet http://www.bombardier.com. (3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221. (4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. Table 2—Service Bulletins Incorporated by Reference Document Revision Date Bombardier Service Bulletin 84-28-03 C May 15, 2009 Bombardier Service Bulletin 84-28-04 B October 21, 2009 Bombardier Service Bulletin 84-28-05 Original June 28, 2006 Bombardier Service Bulletin 84-28-07 Original August 1, 2008 Bombardier Service Bulletin 84-57-09 B September 3, 2008 Issued in Renton, Washington, on June 10, 2011. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011-15364 Filed 6-24-11; 8:45 am] BILLING CODE 4910-13-P