Airworthiness directives › 2005-26-11
AD 2005-26-11 Airworthiness Directives; DG Flugzeugbau GmbH Models DG-800B and DG-500MB Sailplanes
Applicability*9
(c) This AD affects the following sailplane models and serial numbers that are certificated in any category: Model Serial Nos. (1) DG-800B All serial numbers up to and including 8-260, with the exception of 8-247 and 8-258; and (2) DG-500MB All serial numbers up to and including 5E220B15, with the exception of 5E190B5.
Required actions
(e) To address this problem, you must do the following: Actions Compliance Procedures (1) Remove the starter ring gear assembly with adapter and lower drive belt pulley Within 30 days after February 7, 2006 (the effective date of this AD) Follow DG-Flugzeugbau GmbH Working Instruction No. 1 for TN 873/30, dated June 9, 2004; and Technical Note No. 873/30 and No. 843/22, approved by Luftfahrt-Bundesamt (LBA) on June 29, 2004, and approved by European Aviation Safety Agency (EASA) on July 9, 2004. (2) Modify the connection area where the bolts connect the starter ring gear to the lower drive belt pulley adapter Within 30 days after February 7, 2006 (the effective date of this AD) Follow DG-Flugzeugbau GmbH Working Instruction No. 1 for TN 873/30, dated June 9, 2004; and Technical Note No. 873/30 and No. 843/22, approved by LBA on June 29, 2004, and approved by EASA on July 9, 2004. (3) Reinstall the starter ring gear assembly with the adapter and lower pulley Within 30 days after February 7, 2006 (the effective date of this AD) Follow DG-Flugzeugbau GmbH Working Instruction No. 1 for TN 873/30, dated June 9, 2004; and Technical Note No. 873/30 and No. 843/22, approved by LBA on June 29, 2004, and approved by EASA on July 9, 2004.
Unsafe condition
(d) This AD is the result of bolt failure in the connection of the starter ring gear to the drive belt pulley adapter. The bolt heads may shear off and the bolt heads could fall into the engine compartment. The actions specified in this AD are intended to prevent the bolts currently used to connect the starter ring gear to the drive belt pulley adapter from shearing off and the bolt heads falling into the engine compartment. Failure of this connection could render the engine inoperative. Consequently, this failure could lead to loss of control of the sailplane.
Affected ADs
(b) None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1