AD 2012-26-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Thielert | Various | Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines |
Unsafe Condition
Blockage of the gearbox oil filler plug vent hole, which causes pressurization in the gearbox, resulting in oil leakage and a slipping clutch.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the oil filler plug vent hole for chips. If chips are found, disassemble the gearbox and check the radial shaft sealing rings for leakage. Replace the gearbox if leakage is noted before the next flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 110 flight hours after the effective date or at the next scheduled maintenance, whichever occurs first.
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Affected Aircraft
Thielert Aircraft Engines GmbH TAE 125-02-99 and TAE 125-02-114 reciprocating engines.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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