2010-12-05: Electrical power

2010-12-05 Bombardier, Inc.: Amendment 39-16326. Docket No. FAA- 2009-1033; Directorate Identifier 2009-NM-104-AD. Effective Date (a) This airworthiness directive (AD) becomes effective July 12, 2010. Affected ADs (b) This AD supersedes AD 2009-06-18, Amendment 39-15855. Applicability (c) This AD applies to Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, having serial numbers (S/Ns) 10004 and subsequent; and Model CL-600-2D15 (Regional Jet Series 705) airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes, having S/N 15002 and subsequent; certificated in any category. Subject (d) Air Transport Association (ATA) of America Code 24: Electrical power. Reason (e) The mandatory continuing airworthiness information (MCAI) states: Following in-flight test deployments on CL-600-2B19 aircraft, several Air-Driven generators (ADGs) failed to come online. Investigation revealed that, as a result of awiring anomaly that had not been detected during ADG manufacture, a short circuit was possible between certain internal wires and their metallic over- braided shields, which could result in the ADG not providing power when deployed. This directive mandates checking of the ADG and modification of the ADG internal wiring, if required. It also prohibits future installation of unmodified ADGs. The unsafe condition is failure of the ADG, which could lead to loss of several functions essential for safe flight. Restatement of Requirements of AD 2009-06-18, With No Changes Actions and Compliance (f) Unless already done, do the following actions. (1) For airplanes identified in Table 1 of this AD: Within 12 months after April 30, 2009 (the effective date of AD 2009-06-18), inspect the serial number of the installed ADG. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the ADG can be conclusively determined from that review. Table 1--Bombardier Airplane Identification Model Serial No. CL 600 2C10 airplanes 10004 through 10265. CL 600 2D15 and CL 600 2D24 airplanes 15002 through 15162. (i) If the serial number is not listed in paragraph 1.A of Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006, no further action is required by this AD. (ii) If the serial number is listed in paragraph 1.A of Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006 ("the service bulletin''), within 12 months after April 30, 2009, inspect the ADG identification plate and, as applicable, do the actions of paragraph (f)(1)(ii)(A) or (f)(1)(ii)(B) of this AD. (A) If the identification plate is marked with the symbol "24- 2,'' no further action is required by this AD. (B) If the identification plate is not marked with the symbol "24-2,'' modify the ADG wiring in accordance with the Accomplishment Instructions of the service bulletin. (2) For all Model CL-600-2C10 airplanes having S/N 10004 and subsequent, and Model CL-600-2D15 and CL-600-2D24 airplanes having S/N 15002 and subsequent: As of April 30, 2009, no ADG part number 604-90800-19 (761339E), having S/N 0101 through 0132, 0134 through 0167, 0169 through 0358, 0360 through 0438, 0440 through 0456, 0458 through 0467, 0469, 0471 through 0590, 0592 through 0597, 0599 through 0745, 0747 through 1005, or 1400 through 1439, may be installed on any airplane, unless the identification plate of the ADG is identified with the symbol "24-2.'' Note 1: Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006, refers to Hamilton Sundstrand Service Bulletin ERPS10AG-24-2, dated February 19, 2004, for further guidance on identifying the symbol "24-2.'' (3) Actions done before April 30, 2009, according to Bombardier Service Bulletin 670BA-24-015, dated May 17, 2004, are considered acceptable for compliance with the corresponding actions specified in paragraph (f)(1) of this AD, provided the ADG has not been replaced since those actions were done. New Requirements of This AD Actions and Compliance (g) Unless already done, do the following actions. (1) For airplanes identified in Table 2 of this AD: Within 12 months after the effective date of this AD, inspect the serial number of the installed ADG. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the ADG can be conclusively determined from that review. Table 2--Additional Bombardier Airplane Identification Model Serial No. CL 600 2C10 airplanes 10266 through 10273 inclusive. CL 600 2D15 and CL 600 2D24 airplanes 15163 through 15223 inclusive. (i) If the serial number is not listed in paragraph 1.A of Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006, no further action is required by this AD. (ii) If the serial number is listed in paragraph 1.A of Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006 ("the service bulletin''), within 12 months after the effective date of this AD, inspect the ADG identification plate and, as applicable, do the actions of paragraph (g)(1)(ii)(A) or (g)(1)(ii)(B) of this AD. (A) If the identification plate is marked with the symbol "24- 2'', no further action is required by this AD. (B) If the identification plate is not marked with the symbol "24-2'', modify the ADG wiring in accordance with the Accomplishment Instructions of the service bulletin. (2) Actions done before the effective date of this AD according to Bombardier Service Bulletin 670BA-24-015, dated May 17, 2004, are considered acceptable for compliance with the corresponding actions specified in paragraph (g)(1) of this AD, provided the ADG has not been replaced since those actions were done. FAA AD Differences Note 2: This AD differs from the MCAI and/or service information as follows: The MCAI specifies to inspect Model CL-600-2C10 airplanes having S/Ns 10004 through 10265 inclusive and Model CL- 600-2D15 and CL-600-2D24 airplanes having S/Ns 15002 through 15162 inclusive. This AD also specifies to inspect Model CL-600-2C10 airplanes having S/Ns 10266 through 10273, and Model CL-600-2D15 and CL-600-2D24 airplanes having S/Ns 15163 through 15223 inclusive. Other FAA AD Provisions (h) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office, ANE-170, 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 on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office. The AMOC approval letter must specifically reference this AD. AMOCs approved previously in accordance with AD 2009-06-18, Amendment 39-15855, are approved as AMOCs for the corresponding provisions of 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. (3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120-0056. Related Information (i) Refer to MCAI Canadian Airworthiness Directive CF-2008-10, dated February 5, 2008; and Bombardier Service Bulletin 670BA-24- 015, Revision A, dated December 18, 2006; for related information. Material Incorporated by Reference (j) You must use Bombardier Service Bulletin 670BA-24-015, Revision A, dated December 18, 2006, to do the actions required by this AD, unless the AD specifies otherwise. (1) The Director of the Federal Register previously approved the incorporation by reference of Bombardier Service Bulletin 607BA-24- 015, Revision A, dated December 18, 2006, on April 30, 2009 (74 FR 13094, March 26, 2009). (2) For service information identified in this AD, contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855- 7401; e-mail [email protected]; Internet http:// www.bombardier.com. (3) You may review copies of the service information atthe 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.