AD 2011-09-19 Airworthiness Directives; BURKHART GROB LUFT-UND Model G 103 C Twin III SL Gliders

This AD applies to BURKHART GROB LUFT-UND G 103 C Twin III SL gliders, all serial numbers, certificated in any category.

Unless already done, within 30 days after the effective date of this AD, do the following actions: (1) Update the glider documentation following Grob Aircraft Service Bulletin No. MSB-869-24/1, dated July 20, 2009, by inserting the following revised pages from Grob Aircraft AG: (i) Into the Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991): Pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009. (ii) Into the Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December, 1991) or FAA-approved maintenance program: pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 2006. (2) Inspect for cracks at the bent area of the engaged tooth of the upper pulley wheel securing plate following the procedure to access the area found on page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. (3) Verify that the propeller track (the play at the propeller tip) is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Note 1: The torque values and tolerances of the upper pulley wheel grooved nut have been standardized in the POH and maintenance manual. (4) If the bent area of the engaged tooth of the upper pulley wheel securing plate has no crack found per the inspection of paragraph (f)(2) of this AD, but the propeller track value measured is not within the allowable tolerances per paragraph (f)(3) of this AD, before further flight, readjust the torque of the upper pulley wheel grooved nut using the updated aircraft technical documentation following the procedure on page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Ensure accordingly that the propeller track is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. If the propeller track is out of the allowable tolerance, then contact GROB for further instructions. (5) If any crack is found in the bent area of the engaged tooth of the upper pulley wheel securing plate per the inspection in paragraph (f)(2) of this AD, before further flight, do the following actions: (i) Remove the upper pulley wheel grooved nut and then look at the securing plate to identify if other teeth are available to be bent to secure the grooved nut. Do not bend an already bent tooth. If all teeth of the securing plate are already bent, replace the securing plate with a serviceable one. (ii) Screw back the upper pulley wheel grooved nut (and its securing plate) and tighten it, applying the torque following page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Ensure accordingly that the propeller track is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. If the propeller track is out of the allowable tolerances, then contact GROB for further instructions. FAA AD Differences Note 2: 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, 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. 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, 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 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 Clearance Officer, AES-200. Related Information (h) Refer to the following documents for related information: (1) MCAI EASA AD No.: 2010-0107, dated June 11, 2010; (2) Grob Aircraft Service Bulletin MSB 869-24/1, dated July 20, 2009; (3) Grob Aircraft Service Letter SL-869-01, dated June 9, 2009; (4) Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991), pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009; and (5) Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December 1991), page 6.12, Revision 9, dated May 24, 2002; and pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 2006. (i) For service information related to this AD, contact GROB Aircraft AG, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Head of Customer Service and Support, Germany; telephone: +49 (0) 8268-998-139; fax: +49 (0) 8268-998-200; e-mail productsupport@grob-aircraft.com; Internet: http://www.grob-aircraft.eu. You may review copies of the referenced 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. Material Incorporated by Reference (i) You must use Grob Aircraft Service Bulletin No. MSB-869-24/1, dated July 20, 2009; Grob Aircraft Service Letter SL-869-01, dated June 9, 2009; Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991), pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009; and Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December 1991), page 6.12, Revision 9, dated May 24, 2002; and pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 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 GROB Aircraft AG, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Head of Customer Service and Support, Germany; telephone: +49 (0) 8268-998-139; fax: +49 (0) 8268-998-200; e-mail productsupport@grob-aircraft.com; Internet: http://www.grob-aircraft.eu. (3) You may review copies of the referenced 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. (4) You may also review copies of the service information incorporated by reference for this AD 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 April 22, 2011. John Colomy, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011-10388 Filed 5-10-11; 8:45 am] BILLING CODE 4910-13-P

Unless already done, within 30 days after the effective date of this AD, do the following actions: (1) Update the glider documentation following Grob Aircraft Service Bulletin No. MSB-869-24/1, dated July 20, 2009, by inserting the following revised pages from Grob Aircraft AG: (i) Into the Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991): Pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009. (ii) Into the Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December, 1991) or FAA-approved maintenance program: pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 2006. (2) Inspect for cracks at the bent area of the engaged tooth of the upper pulley wheel securing plate following the procedure to access the area found on page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. (3) Verify that the propeller track (the play at the propeller tip) is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Note 1: The torque values and tolerances of the upper pulley wheel grooved nut have been standardized in the POH and maintenance manual. (4) If the bent area of the engaged tooth of the upper pulley wheel securing plate has no crack found per the inspection of paragraph (f)(2) of this AD, but the propeller track value measured is not within the allowable tolerances per paragraph (f)(3) of this AD, before further flight, readjust the torque of the upper pulley wheel grooved nut using the updated aircraft technical documentation following the procedure on page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Ensure accordingly that the propeller track is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. If the propeller track is out of the allowable tolerance, then contact GROB for further instructions. (5) If any crack is found in the bent area of the engaged tooth of the upper pulley wheel securing plate per the inspection in paragraph (f)(2) of this AD, before further flight, do the following actions: (i) Remove the upper pulley wheel grooved nut and then look at the securing plate to identify if other teeth are available to be bent to secure the grooved nut. Do not bend an already bent tooth. If all teeth of the securing plate are already bent, replace the securing plate with a serviceable one. (ii) Screw back the upper pulley wheel grooved nut (and its securing plate) and tighten it, applying the torque following page 6.12 of the Grob Aircraft AG G 103 C TWIN III SL Maintenance Manual, Date of Issue December, 1991, Revision 9, dated May 24, 2002, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. Ensure accordingly that the propeller track is within the allowable tolerances following the procedure on page 4.9 of the Grob Aircraft AG G 103 C TWIN III SL POH, Date of Issue December, 1991, Revision 6, dated July 20, 2009, as specified in Grob Aircraft Service Letter SL 869-01, dated June 9, 2009. If the propeller track is out of the allowable tolerances, then contact GROB for further instructions. FAA AD Differences Note 2: 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, 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. 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, 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 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 Clearance Officer, AES-200. Related Information (h) Refer to the following documents for related information: (1) MCAI EASA AD No.: 2010-0107, dated June 11, 2010; (2) Grob Aircraft Service Bulletin MSB 869-24/1, dated July 20, 2009; (3) Grob Aircraft Service Letter SL-869-01, dated June 9, 2009; (4) Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991), pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009; and (5) Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December 1991), page 6.12, Revision 9, dated May 24, 2002; and pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 2006. (i) For service information related to this AD, contact GROB Aircraft AG, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Head of Customer Service and Support, Germany; telephone: +49 (0) 8268-998-139; fax: +49 (0) 8268-998-200; e-mail productsupport@grob-aircraft.com; Internet: http://www.grob-aircraft.eu. You may review copies of the referenced 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. Material Incorporated by Reference (i) You must use Grob Aircraft Service Bulletin No. MSB-869-24/1, dated July 20, 2009; Grob Aircraft Service Letter SL-869-01, dated June 9, 2009; Grob Aircraft AG G 103 C Twin III SL Pilot's Operating Handbook (POH) (dated December 1991), pages 0.2A, 0.3, 0.4, and 4.9, Revision 6, dated July 20, 2009; and Grob Aircraft AG G 103 C Twin III SL Maintenance Manual (dated December 1991), page 6.12, Revision 9, dated May 24, 2002; and pages 0.1A, 0.2, 0.3, 4.2, and 6.6, Revision 10, dated December 15, 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 GROB Aircraft AG, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Head of Customer Service and Support, Germany; telephone: +49 (0) 8268-998-139; fax: +49 (0) 8268-998-200; e-mail productsupport@grob-aircraft.com; Internet: http://www.grob-aircraft.eu. (3) You may review copies of the referenced 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. (4) You may also review copies of the service information incorporated by reference for this AD 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 April 22, 2011. John Colomy, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 2011-10388 Filed 5-10-11; 8:45 am] BILLING CODE 4910-13-P