AD 2013-03-09 Airworthiness Directives; DG Flugzeugbau GmbH Gliders

This AD applies to DG Flugzeugbau GmbH Model DG-1000T gliders equipped with Solo Kleinmotoren Model 2350 C engines, all serial numbers, certificated in any category.

Unless already done, do the following actions: (1) Within 25 hours time-in-service (TIS) after March 19, 2013 (the effective date of this AD) or 6 months after March 19, 2013 (the effective date of this AD), whichever occurs first, remove the propeller pulley assembly (module) from the engine and inspect the transition region of the part number (P/N) 20 31 211 shaft following the Actions section of Solo Kleinmotoren GmbH Service Bulletin Nr. 4603-13, Issue 1, dated September 24, 2012. (2) If, during the inspection required by paragraph (f)(1) of this AD, cracks are detected in the P/N 20 31 211 shaft, before further flight, do the following: (i) Replace the P/N 20 31 211 shaft with an airworthy P/N 20 31 211 shaft; or (ii) Replace the propeller pulley assembly (module) with an airworthy propeller pulley assembly (module).

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; email: jim.rutherford@faa.gov. 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.

This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as a material defect within the propeller shaft, most likely caused by a manufacturing error. We are issuing this AD to prevent failure of the propeller shaft and detachment of the propeller, which could result in reduced control of the aircraft or injury to persons on the ground.

None.