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2009-06-03 Viking Air Limited (Formerly Bombardier, Inc.): Amendment 39-15839. Docket No. FAA-2008-1330; Directorate Identifier 2008-NM- 138-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective April 20, 2009.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Viking Air Limited Model DHC-7-1, DHC-7- 100, DHC-7-101, DHC-7-102, and DHC-7-103 airplanes, certificated in any category; serial numbers 1 through 113 inclusive, with Modifications 7/2444 and 7/2445 incorporated.
Subject
(d) Air Transport Association (ATA) of America Code 33: Lights.
Reason
(e) The mandatory continuing airworthiness information (MCAI) states:
"Transport Canada has received numerous service difficulty reports concerning Viking DHC-7 and Bombardier DHC-8 aircraft fluorescent lamp holder damage due to overheating. It has been determined that lamp holder overheating is a result of arcing between the fluorescent tube pins and the lampholder contacts when the tube is not properly seated during installation. Overheating of lamp holders, if not corrected, could generate fumes and smoke, causing concern to passengers and crew.
This directive mandates repetitive inspection[s] for proper installation [and functioning] of fluorescent tubes and prohibits installation of non-arc-protected replacement fluorescent lamp ballasts."
The unsafe condition could result in an in-flight fire. The corrective actions include replacing any lamps that are not properly seated in the lamp holder, and replacing any broken, non-functioning lamp holders. Replacing all affected fluorescent lamp ballasts would terminate the repetitive inspections.
Actions and Compliance
(f) Unless already done, do the following actions.
(1) Within 1,000 flight hours after the effective date of this AD: Perform a visual inspection to ensure proper installation and functioning of the fluorescent tubes in the lamp holders, and perform all applicable corrective actions before further flight, in accordance with the Accomplishment Instructions of Viking Service Bulletin V7-33-01, dated February 28, 2008. Repeat the inspection thereafter at intervals not to exceed 1,000 flight hours.
(2) Replacing all fluorescent lamp ballasts having part number (P/N) BAO8006-1 and BA[O]8006-28-1 with new fluorescent lamp ballasts having P/N BR9000-21, in accordance with the Accomplishment Instructions of Viking Service Bulletin V7-33-01, dated February 28, 2008, terminates the repetitive inspections required by paragraph (f)(1) of this AD.
FAA AD Differences
Note 1: 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 proceduresfound 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
(h) Refer to MCAI Canadian Airworthiness Directive CF-2008-27, dated July 4, 2008; and Viking Service Bulletin V7-33-01, dated February 28, 2008; for related information.
Material Incorporated by Reference
(i) You must use Viking Service Bulletin V7-33-01, dated February 28, 2008, 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 Viking Air Limited, 9574 Hampden Road, Sidney, British Columbia V8L 8V5, Canada; telephone 250-656-7227; fax 250-656-0673; e-mail technical.publications@vikingair.com; Internet http:// www.vikingair.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 or 425-227-1152.
(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.
