2013-09-09: Wing

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by removing Amendment 39-10863 (63 FR 58624, November 2, 1998), and adding the following new AD: 2013-09-09 Slingsby Sailplanes Ltd.: Amendment 39-17451; Docket No. FAA-2013-0220; Directorate Identifier 2013-CE-002-AD. (a) Effective Date This airworthiness directive (AD) becomes effective June 20, 2013. (b) Affected ADs This AD supersedes AD 98-22-15, Amendment 39-10863 (63 FR 58624, November 2, 1998). (c) Applicability This AD applies to Slingsby Sailplanes Ltd. Models Dart T.51, Dart T.51/17, and Dart T.51/17R sailplanes, all serial numbers, that are: (1) Equipped with aluminum alloy spar booms; and (2) certificated in any category. (d) Subject Air Transport Association of America (ATA) Code 57: Wing. (e) Reason This AD was prompted by an incident of glue joint failure on a starboard wing caused by water entering the area of the airbrake box that resulted in delamination and corrosion in the area of the aluminum alloy spar booms and the wing attach fittings. The manufacturer has also issued revised service information that changes the repetitive inspection interval and method. We are issuing this AD to prevent failure of the spar assembly and adjoining structure, which could result in reduced controllability or complete loss of control. (f) Actions and Compliance Retained From AD 98-22-15, Amendment 39- 10863 (63 FR 58624, November 2, 1998) Unless already done, do the following actions specified in paragraphs (f)(1) and (f)(2) of this AD: (1) Within the next 6 calendar months after December 14, 1998 (the effective dateretained from AD 98-22-15, Amendment 39-10863 (63 FR 58624, November 2, 1998)), inspect the aluminum alloy spar booms and the wing attach fittings for delamination or corrosion damage following the ACTION section of Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/T51, Issue No. 2, dated October 7, 1997, or the ACTION section of Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/T51, Issue 3, dated August 21, 2000. Note 1 to paragraph (f)(1) of this AD: Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/T51, Issue No. 2, dated October 7, 1997, and T.I. No. 109/T51, Issue 3, dated August 21, 2000, include guidance to determine whether an affected sailplane is equipped with aluminum alloy spar booms. (2) If any corrosion or delamination damage is found during the inspection required by paragraph (f)(1) of this AD, before further flight, contact the manufacturer at the address specified in paragraph (j)(5) of this AD to obtain an FAA-approved repairscheme and incorporate the repair. (g) New Actions and Compliance Unless already done, do the following actions specified in paragraphs (g)(1) and (g)(2) of this AD: (1) Within 5 years after the last inspection required by AD 98- 22-15, Amendment 39-10863 (63 FR 58624, November 2, 1998) and repetitively thereafter at intervals not to exceed 12 months, using an endoscope, inspect the aluminum alloy spar booms and the wing attach fittings for delamination or corrosion damage following paragraph 11 of the ACTION section of Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/T51, Issue 3, dated August 21, 2000. (2) If any corrosion or delamination damage is found during any inspection required by paragraph (g)(1) of this AD, before further flight, contact the manufacturer at the address specified in paragraph (j)(5) of this AD to obtain an FAA-approved repair scheme and incorporate the repair. (h) Other FAA AD Provisions The following provisions also applyto this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, Standards Office, 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: Jim Rutherford, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816) 329-4165; fax: (816) 329-4090; email: jim.rutherford@faa.gov. Before using any approved AMOC on any sailplane 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 isreturned to service. (3) Reporting Requirements: For any reporting requirement in this AD, a federal agency may not conduct or sponsor, and a person is not required to respond to, nor shall a person be subject to a penalty for [[Page 28725]] failure to comply with a collection of information subject to the requirements of the Paperwork Reduction Act unless that collection of information displays a current valid OMB Control Number. The OMB Control Number for this information collection is 2120-0056. Public reporting for this collection of information is estimated to be approximately 5 minutes per response, including the time for reviewing instructions, completing and reviewing the collection of information. All responses to this collection of information are mandatory. Comments concerning the accuracy of this burden and suggestions for reducing the burden should be directed to the FAA at: 800 Independence Ave. SW., Washington, DC 20591, Attn: Information Collection ClearanceOfficer, AES-200. (i) Related Information Refer to Civil Aviation Authority (CAA) AD British AD 005-09-97, dated October 3, 1997, for related information. (j) Material Incorporated by Reference (1) The Director of the Federal Register approved the incorporation by reference (IBR) of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (3) The following service information was approved for IBR on June 20, 2013. (i) Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/ T51, Issue 3, dated August 21, 2000. (ii) Reserved. (4) The following service information was approved for IBR on December 14, 1998 (63 FR 58624, November 2, 1998). (i) Slingsby Aviation Ltd. Technical Instruction T.I. No. 109/ T51, Issue No. 2, dated October 7, 1997. (ii) Reserved. (5) For Slingsby Sailplanes Ltd. service information identified in this AD, contact Slingsby Advanced Composites Ltd., Ings Lane, Kirkbymoorside, North Yorkshire, England YO62 6EZ; telephone: +44(0)1751 432474; Internet: none. (6) You may view this service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri 64106. For information on the availability of this material at the FAA, call (816) 329-4148. (7) You may view this 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/cfr/ibr-locations.html