2008-19-07: Fuselage cable

2008-19-07 Bombardier, Inc. (Formerly de Havilland, Inc.): Amendment 39-15674. Docket No. FAA-2008-0730; Directorate Identifier 2008-NM- 055-AD. Effective Date (a) This airworthiness directive (AD) becomes effective November 3, 2008. Affected ADs (b) None. Applicability (c) Bombardier Model DHC-8-400, DHC-8-401 and DHC-8-402 airplanes, serial numbers 4003, 4004, 4006, and 4008 through 4129, certificated in any category. Subject (d) Air Transport Association (ATA) of America Code 27: Flight Controls Reason (e) The mandatory continuing airworthiness information (MCAI) states: All DHC-8 Series 400 aircraft have had a spoiler fuselage cable disconnect sensing system installed in production. Subsequently it was discovered that, in the event of a spoiler fuselage cable disconnect, only the ROLL SPLR INBD HYD caution light will be illuminated until the aircraft speed decreases below 165 kts [knots], at which time the ROLL SPLR OUTBD HYD caution light will also be illuminated. In the event of a spoiler fuselage cable disconnect in association with the existing indications described above, the reduction in roll authority could result in increased pilot workload during approach and landing. Modsums 4-110066 and 4-126356 (each applicable to a different batch of aircraft serial numbers) have been issued to rework the sensing circuit caution light indication to ensure that it is consistent for spoiler fuselage cable disconnects above and below 165 kts. Modsum 4-126356 has been installed in production on aircraft serial numbers 4130 and subsequent. Actions and Compliance (f) Unless already done, do the following actions. (1) For airplanes with serial numbers 4003, 4004, 4006, and 4008 through 4094: Within 6,000 flight hours after the effective date of this AD, modify the spoiler cable disconnect sensing circuit by incorporating Modsum 4-110066 in accordance with Bombardier Service Bulletin 84-27-33, dated June 6,2007. (2) For airplanes with serial numbers 4095 through 4129: Within 6,000 flight hours after the effective date of this AD, modify the spoiler cable disconnect sensing circuit by incorporating Modsum 4- 126356 in accordance with Bombardier Service Bulletin 84-27-28, Revision B, dated September 25, 2007. (3) Installations of Modsum 4-126356 accomplished before the effective date of this AD according to Bombardier Service Bulletin 84-27-28, dated October 2, 2006; or Revision A, dated April 30, 2007; are considered acceptable for compliance with the corresponding action specified in this AD. FAA AD Differences Note: This AD differs from the MCAI and/or service information as follows: No differences. Other FAA AD Provisions (g) 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: Dan Parrillo, Aerospace Engineer, Systems and Flight Test Branch, ANE-172, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228-7305; 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 (h) Refer to MCAI Canadian Airworthiness Directive CF-2008-13, dated February 14, 2008; and Bombardier Service Bulletins 84-27-33, dated June 6, 2007; and 84-27-28, Revision B, dated September 25, 2007; for related information. Material Incorporated by Reference (i) You must use Bombardier Service Bulletin 84-27-33, dated June 6, 2007; or Bombardier Service Bulletin 84-27-28, Revision B, dated September 25, 2007; 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., Bombardier Regional Aircraft Division, 123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada. (3) You mayreview copies at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or 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/cfr/ibr- locations.html.