AD 2006-17-10 Airworthiness Directives; Bombardier Model DHC-8-100, DHC-8-200, and DHC-8-300 Series Airplanes

Models named: DHC-8-102, -103, -106, -201, -202, -301, -311, -315. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Bombardier Model DHC-8-102, -103, -106, -201, -202, -301, -311, and -315 airplanes; certificated in any category; serial numbers 003 through 407 inclusive, 409 through 412 inclusive, and 414 through 433 inclusive; excluding those with Hunting interiors.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspection (f) Within 6,300 flight hours or 36 months after the effective date of this AD, whichever occurs first: Perform detailed inspections to detect signs of arcing of the fluorescent tube assemblies of the cabin, sidewalls, and lavatory, in accordance with the applicable temporary revision (TR) of the applicable maintenance program manual (MPM) identified in Table 1 of this AD. If any sign of arcing is found, repair before further flight using a method approved by either the Manager, New York Aircraft Certification Office (ACO), FAA; or Transport Canada Civil Aviation (or its delegated agent). Chapter 33-20-00 of the applicable airplane maintenance manual is one approved method. Repeat the inspection at intervals not to exceed 6,300 flight hours, until all ballast part numbers (P/Ns) BA08006-1 or BA08006-28-1 have been replaced in accordance with paragraph (g) of this AD. Table 1.—TRs Inspect the fluorescent tube assemblies of the— In accordance with task— of de Havilland TR— To the de Havilland DASH 8 series— For model— Cabin 3320/01 MRB-146, dated August 31, 2004 100 MPM PSM 1-8-7 DHC-8-102, -103, and -106 airplanes.   3320/01 MRB 2-24, dated August 31, 2004 200 MPM PSM 1-82-7 DHC-8-201 and -202 airplanes.   3320/01 MRB 3-155, dated August 31, 2004 300 MPM PSM 1-83-7 DHC-8-301, -311, and -315 airplanes. Lavatory 3320/03 MRB-147, dated May 3, 2005 100 MPM PSM 1-8-7 DHC-8-102, -103, -106 airplanes.   3320/03 MRB 2-25, dated May 3, 2005 200 MPM PSM 1-82-7 DHC-8-201 and -202 airplanes.   3320/03 MRB 3-156, dated May 3, 2005 300 MPM PSM 1-83-7 DHC-8-301, -311, and -315 airplanes. Sidewall 3320/02 MRB-147, dated May 3, 2005 100 MPM PSM 1-8-7 DHC-8-102, -103, and -106 airplanes.   3320/02 MRB 2-25, dated May 3, 2005 200 MPM PSM 1-82-7 DHC-8-201 and -202 airplanes.   3320/02 MRB 3-156, dated May 3, 2005 300 MPM PSM 1-83-7 DHC-8-301, -311, and -315 airplanes. Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” Terminating Action (g) The repetitive inspections required by this AD may be terminated if all ballasts installed on the airplane have P/N BR9000-21, installed in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 8-33-51, Revision ‘A,’ dated April 20, 2005 (to replace ballast P/N BA08006-1), or 8-33-52, dated April 15, 2005 (to replace ballast P/N BA08006-28-1). Ballasts installed before the effective date of this AD are also acceptable if done in accordance with Bombardier Service Bulletin 8-33-51, dated August 16, 2002. Parts Installation (h) As of the effective date of this AD: No person may install a ballast P/N BA08006-1 or BA08006-28-1 on any airplane. Alternative Methods of Compliance (AMOCs) (i)(1) The Manager, New York ACO, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (j) Canadian airworthiness directive CF-2004-26R1, dated September 28, 2005, also addresses the subject of this AD. Material Incorporated by Reference (k) You must use the service information identified in Table 2 of this AD to perform the actions that are required by this AD, unless the AD specifies otherwise. Table 2.—Material Incorporated by Reference de Havilland Temporary Revision— To the de Havilland DASH 8 Series— MRB-146, dated August 31, 2004 100 Maintenance Program Manual PSM 1-8-7. MRB-147, dated May 3, 2005 100 Maintenance Program Manual PSM 1-8-7. MRB 2-24, dated August 31, 2004 200 Maintenance Program Manual PSM 1-82-7. MRB 2-25, dated May 3, 2005 200 Maintenance Program Manual PSM 1-82-7. MRB 3-155, dated August 31, 2004 300 Maintenance Program Manual PSM 1-83-7. MRB 3-156, dated May 3, 2005 300 Maintenance Program Manual PSM 1-83-7. (Page 2 of de Havilland Temporary Revision MRB-147, dated May 3, 2005, incorrectly refers to Series 300 airplanes; that reference should be to Series 100.) If the terminating action is accomplished, you must use Bombardier Service Bulletin 8-33-51, Revision ‘A,’ dated April 20, 2005; or Bombardier Service Bulletin 8-33-52, dated April 15, 2005, as applicable, to perform the optional terminating action specified in this AD. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Bombardier Regional Aircraft Division, 123 Garratt Boulevard, Downsview, Ontario M3K 1Y5, Canada, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Issued in Renton, Washington, on August 14, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6-13829 Filed 8-22-06; 8:45 am] BILLING CODE 4910-13-P

This AD results from reports of overheating due to arcing between the fluorescent tube pins and the lamp holder contacts. The tubes had not been properly seated during installation. We are issuing this AD to prevent fumes, traces of visible smoke, and fire at the fluorescent light tube assembly.