2009-01-10: Air Driven Generator (ADG)

2009-01-10 Bombardier, Inc. (Formerly Canadair): Amendment 39-15789. Docket No. FAA-2008-0625; Directorate Identifier 2008-NM-069-AD. Effective Date (a) This airworthiness directive (AD) becomes effective February 27, 2009. Affected ADs (b) None. Applicability (c) This AD applies to Bombardier Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10004 and subsequent; Model CL-600-2D15 (Regional Jet Series 705) airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 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: ``During a pre-delivery flight of a CL-600-2C10 aircraft, the AC essential bus did not come on-line following deployment of the Air Driven Generator (ADG). Following investigation, it was determined that a specific batch of contactors in the ADG Power Center (ADGPC) is susceptible to failure due to low contact pressure. This directive mandates inspection of the ADGPC and replacement of any contactors in the suspect batch. It also prohibits future installation of ADGPCs and contactors that have not been inspected per this directive.'' The unsafe condition is malfunction of the emergency AC generation and control system that supplies emergency AC power to essential flight instruments, including the flap and slat system, pitch trim system, and hydraulic pump 3B. Loss of essential flight instruments could prevent continued safe flight and landing of the airplane. Actions and Compliance (f) Unless already done, do the following actions. (1) For Model CL-600-2C10 airplanes having serial numbers 10004 through 10265, and Model CL-600-2D15 and CL-600-2D24 airplanes having serial numbers 15002 through 15162: Within 5,000 flight hours or 24 months after the effective date of this AD, whichever occurs first, inspect for the serial number of the installed ADGPC and, as applicable, for the serial numbers of installed contactors K117, K147 and K153, in accordance with Part A of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-24-021, Revision A, dated December 11, 2006. If the serial number of the ADGPC is in the range 134 through 250, and any installed contactor has a serial number in the range 411 through 777, before further flight, replace the affected contactor in accordance with Part B of Bombardier Service Bulletin 670BA-24-021, Revision A, dated December 11, 2006. (2) Previous inspection of the ADGPC, and replacement of contactors, before the effective date of this AD, in accordance with Bombardier Service Bulletin 670BA-24-021, dated May 30, 2005, meets the requirements of paragraphs (f)(1) of this AD if the ADGPC has not been replaced since accomplishment of Bombardier Service Bulletin 670BA-24-021, Revision A, dated December 11, 2006.(3) A review of the aircraft maintenance records to determine the ADGPC and contactor serial numbers also meets the inspection requirements of paragraph (f)(1) of this AD. Parts Installation (g) As of the effective date of this AD: No replacement/spare ADGPC having part number 781GA01Y00, with a serial number in the range 134 through 250, is permitted to be installed on any aircraft, unless the ADGPC has been modified according to paragraph (f)(1) of this AD. (h) As of the effective date of this AD: No replacement/spare ADGPC contactor having part number 995CA01Y00, with a serial number in the range 411 through 777, is permitted to be installed on any aircraft, unless the ADGPC contactor is identified with two labels, as specified in Zodiac ECE Service Bulletin 995CA01Y-24-001, dated May 3, 2005. FAA AD Differences Note 1: This AD differs from the MCAI and/or service information as follows: No differences. Other FAA AD Provisions (i) The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (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: Wing Chan, Aerospace Engineer, Systems and Flight Test Branch, ANE-172, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7311; fax (516) 794-5531. Before using any approved AMOC on any airplane to which the AMOC applies, notify your appropriate principal inspector (PI) in the FAA Flight Standards District Office (FSDO), or lacking a PI, your local FSDO. (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, the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120- 0056. Related Information (j) Refer to MCAI Canadian Airworthiness Directive CF-2008-14, dated February 19, 2008; Bombardier Service Bulletin 670BA-24-021, Revision A, dated December 11, 2006; and Zodiac ECE Service Bulletin 995CA01Y-24-001, dated May 3, 2005; for related information. Material Incorporated by Reference (k) You must use Bombardier Service Bulletin 670BA-24-021, Revision A, dated December 11, 2006; and Zodiac ECE Service Bulletin 995CA01Y-24-001, dated May 3, 2005; as applicable; to do the actions required by this AD, unless the AD specifies otherwise. (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 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 that is incorporated by reference 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 or 425-227-1152. (4) You may also review copies of the service information 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.