AD 2013-07-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rotax | Reciprocating | Airworthiness Directives; BRP-Powertrain GmbH & Co KG Rotax Reciprocating Engines |
Unsafe Condition
Certain No. 2 and No. 3 cylinder heads not manufactured to proper specification may have an oil leak in the intake channel in the area of the valve guide, potentially leading to increased oil consumption and oil starvation, possibly resulting in engine stoppage or in-flight engine shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct a one-time visual inspection for excessive oil deposits or carbon deposits on the No. 2 and No. 3 spark plug center and grounding electrodes. If found, replace the cylinder head before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 5 flight hours or 20 days after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRP-Powertrain GmbH & Co KG Rotax 912 F2, 912 F3, 912 F4 (S/N 4,413,013 to 4,413,017), 912 S2, 912 S3, 912 S4 (S/N 4,924,468 to 4,924,491), and 914 F2, 914 F3, 914 F4 (S/N 4,421,156 to 4,421,169).
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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