AD Amdt-39-10542
Unsafe Condition
Failure of the Bosch electrical system regulator, part number 0212920001, could result in smoke entering the cockpit with consequent passenger injury.
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Required Actions
Replace the Bosch electrical system regulator, part number 0212920001, with a type 4 E 26 regulator.
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Compliance Time
Before further flight
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Affected Aircraft
Glaser-Dirks Flugzeugbau GmbH Model DG-400 gliders
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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