AD 2005-26-11
Unsafe Condition
Bolt failure in the connection of the starter ring gear to the drive belt pulley adapter, leading to sheared-off bolt heads falling into the engine compartment, which could render the engine inoperative and lead to loss of control of the sailplane.
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Required Actions
Remove the starter ring gear assembly with adapter and lower drive belt pulley within 30 days after February 7, 2006, following DG-Flugzeugbau GmbH Working Instruction No. 1 for TN 873/30, dated June 9, 2004, and Technical Notes No. 873/30 and No. 843/22, approved by Luftfahrt-Bundesamt (LBA) on June 29.
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Compliance Time
Within 30 days after February 7, 2006
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Affected Aircraft
DG Flugzeugbau GmbH Models DG-800B (all serial numbers up to and including 8-260, except 8-247 and 8-258) and DG-500MB (all serial numbers up to and including 5E220B15, except 5E190B5).
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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