AD 2007-12-13 Airworthiness Directives; Viking Air Limited (Type Certificate No. A-806 Previously Held by deHavilland Inc.) Models DHC-2 Mk. I, DHC-2 Mk. II, and DHC-2 Mk. III Airplanes

Models named: DHC-2 Mk. I, DHC-2 Mk. II, DHC-2 Mk. III. Read the applicability below — it usually turns on serial or part numbers too.

This AD applies to Models DHC-2 Mk. I, DHC-2 Mk. II, and DHC-2 Mk. III airplanes, all serial numbers, that: (1) Are certificated in any category; and (2) Are equipped with wing lift strut assemblies, part numbers (P/Ns) C2W1103, C2W1103A, C2W1104, or C2W1104A.

Unless already done, do either (1) or (2) of the following actions: (1) Inspection using fluorescent penetrant method: Perform the Accomplishment Instructions of Viking Air Ltd. Service Bulletin No. 2/41, Revision C, dated June 23, 2006. (i) For airplanes previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 12 calendar months after the last inspection required by AD 88-08-02 or within the next 30 days after July 16, 2007 (the effective date of this AD), whichever occurs later, and thereafter at intervals not to exceed 12 calendar months. (ii) For airplanes not previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 100 hours time-in-service (TIS) after July 16, 2007 (the effective date of this AD) or within the next 12 calendar months after July 16, 2007 (the effective date of this AD), whichever occurs first, and thereafter at intervals not to exceed 12 calendar months. (2) Inspection using eddy current method: Perform the Accomplishment Instructions of Viking Air Ltd. SB No. 2/55, dated June 23, 2006. (i) For airplanes previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 12 calendar months after the last inspection required by AD 88-08-02 or within the next 30 days after July 16, 2007 (the effective date of this AD), whichever occurs later, and thereafter at intervals not to exceed 24 calendar months. (ii) For airplanes not previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 100 hours TIS after July 16, 2007 (the effective date of this AD) or within the next 12 calendar months after July 16, 2007 (the effective date of this AD), whichever occurs first, and thereafter at intervals not to exceed 24 calendar months. (3) If cracks are found during any inspection required by either paragraph (g)(1) or (g)(2) of this AD, before further flight: (i) Replace the complete wing lift strut assembly with a wing lift strut assembly of the same part number that has had the lower clevis fitting inspected using either the fluorescent penetrant method specified in paragraph (g)(1) of this AD or the eddy current method specified in paragraph (g)(2) of this AD and is found free of cracks. After replacement, continue with the repetitive inspections specified in paragraphs (g)(1) and (g)(2) of this AD; or (ii) Replace the complete wing lift strut assembly with strut assembly C2W1115-1 or C2W1115-2, as appropriate. Installing wing strut assembly C2W1115-1 or C2W1115-2 as replacement parts terminates the repetitive inspections required in paragraphs (g)(1) and (g)(2) of this AD. (4) If no cracks are found during any inspection required in paragraphs (g)(1) or (g)(2) of this AD, before further flight, clean the lower clevis fitting and reinstall the wing strut assembly. After reinstallation, continue with the repetitive inspections specified in paragraphs (g)(1) and (g)(2) of this AD. FAA AD Differences Note: This AD differs from the MCAI and/or service information as follows: No differences. 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, FAA, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: George J. Duckett, Aerospace Engineer, 10 Fifth Street, Valley Stream, New York 11581; telephone: (516) 228-7325; fax (516) 794-5531, has the authority to approve AMOCs for this AD. 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) AMOCs approved for AD 88-08-02 are not approved for this AD. (3) 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. (4) 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 Transport Canada AD CR-1985-08R4, dated September 28, 2006; Viking Service Bulletin No. 2/41, Revision “C”, dated June 23, 2006; and Viking Service Bulletin No. 2/55, dated June 23, 2006; for related information. Material Incorporated by Reference (j) You must use Viking Service Bulletin DHC-2 MK I, MK II and MK III Turbo Beaver Service Bulletin No. 2/41, Revision C, dated June 23, 2006; or Viking DHC-2 Beaver Service Bulletin No. 2/55, dated June 23, 2006, 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, 9584 Hampden Rd., Sidney, BC, Canada, V8L 5V5; telephone: (250) 656-7227. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; 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/code_of_federal_regulations/ibr_locations.html. Issued in Kansas City, Missouri, on May 31, 2007. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-10981 Filed 6-8-07; 8:45 am] BILLING CODE 4910-13-P

Unless already done, do either (1) or (2) of the following actions: (1) Inspection using fluorescent penetrant method: Perform the Accomplishment Instructions of Viking Air Ltd. Service Bulletin No. 2/41, Revision C, dated June 23, 2006. (i) For airplanes previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 12 calendar months after the last inspection required by AD 88-08-02 or within the next 30 days after July 16, 2007 (the effective date of this AD), whichever occurs later, and thereafter at intervals not to exceed 12 calendar months. (ii) For airplanes not previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 100 hours time-in-service (TIS) after July 16, 2007 (the effective date of this AD) or within the next 12 calendar months after July 16, 2007 (the effective date of this AD), whichever occurs first, and thereafter at intervals not to exceed 12 calendar months. (2) Inspection using eddy current method: Perform the Accomplishment Instructions of Viking Air Ltd. SB No. 2/55, dated June 23, 2006. (i) For airplanes previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 12 calendar months after the last inspection required by AD 88-08-02 or within the next 30 days after July 16, 2007 (the effective date of this AD), whichever occurs later, and thereafter at intervals not to exceed 24 calendar months. (ii) For airplanes not previously affected by AD 88-08-02: Inspect the wing lift strut assemblies within the next 100 hours TIS after July 16, 2007 (the effective date of this AD) or within the next 12 calendar months after July 16, 2007 (the effective date of this AD), whichever occurs first, and thereafter at intervals not to exceed 24 calendar months. (3) If cracks are found during any inspection required by either paragraph (g)(1) or (g)(2) of this AD, before further flight: (i) Replace the complete wing lift strut assembly with a wing lift strut assembly of the same part number that has had the lower clevis fitting inspected using either the fluorescent penetrant method specified in paragraph (g)(1) of this AD or the eddy current method specified in paragraph (g)(2) of this AD and is found free of cracks. After replacement, continue with the repetitive inspections specified in paragraphs (g)(1) and (g)(2) of this AD; or (ii) Replace the complete wing lift strut assembly with strut assembly C2W1115-1 or C2W1115-2, as appropriate. Installing wing strut assembly C2W1115-1 or C2W1115-2 as replacement parts terminates the repetitive inspections required in paragraphs (g)(1) and (g)(2) of this AD. (4) If no cracks are found during any inspection required in paragraphs (g)(1) or (g)(2) of this AD, before further flight, clean the lower clevis fitting and reinstall the wing strut assembly. After reinstallation, continue with the repetitive inspections specified in paragraphs (g)(1) and (g)(2) of this AD. FAA AD Differences Note: This AD differs from the MCAI and/or service information as follows: No differences. 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, FAA, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: George J. Duckett, Aerospace Engineer, 10 Fifth Street, Valley Stream, New York 11581; telephone: (516) 228-7325; fax (516) 794-5531, has the authority to approve AMOCs for this AD. 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) AMOCs approved for AD 88-08-02 are not approved for this AD. (3) 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. (4) 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 Transport Canada AD CR-1985-08R4, dated September 28, 2006; Viking Service Bulletin No. 2/41, Revision “C”, dated June 23, 2006; and Viking Service Bulletin No. 2/55, dated June 23, 2006; for related information. Material Incorporated by Reference (j) You must use Viking Service Bulletin DHC-2 MK I, MK II and MK III Turbo Beaver Service Bulletin No. 2/41, Revision C, dated June 23, 2006; or Viking DHC-2 Beaver Service Bulletin No. 2/55, dated June 23, 2006, 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, 9584 Hampden Rd., Sidney, BC, Canada, V8L 5V5; telephone: (250) 656-7227. (3) You may review copies at the FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri 64106; 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/code_of_federal_regulations/ibr_locations.html. Issued in Kansas City, Missouri, on May 31, 2007. David R. Showers, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-10981 Filed 6-8-07; 8:45 am] BILLING CODE 4910-13-P