AD 2011-12-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; BRP-Powertrain GmbH & Co. KG Rotax 912 F3, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 Reciprocating Engines |
| engine | Rotax | 912 F3 | Airworthiness Directives; BRP-Powertrain GmbH & Co. KG Rotax 912 F3, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 Reciprocating Engines |
Unsafe Condition
Deviation in hardening of certain Part Number (P/N) 944072 washers exceeds the hardness of the design specification, affecting the magneto ring flywheel hub installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the washer securing the magneto ring flywheel hub with a new washer of the same part number.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 flight hours or at next maintenance after the effective date of the AD, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
BRP-Powertrain GmbH & Co. KG Rotax 912 F3, 912 S2, 912 S3, 912 S4, 914 F2, 914 F3, and 914 F4 reciprocating engines, with specific serial number ranges.
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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