AD 2011-14-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine |
| engine | Rotax | Aircraft | Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine |
Unsafe Condition
Deviation in hardening of Part Number 944072 washers exceeds design specification, potentially leading to cracks in the washer, loosening of the magneto flywheel hub, and ignition failure, which could result in engine damage, in-flight engine shutdown, forced landing, and potential injury.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and replace affected Part Number 944072 washers in the magneto ring flywheel hub installation as per Rotax Aircraft Engines Mandatory Service Bulletin SB-912-058 and SB-914-041.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Various aircraft equipped with Rotax Aircraft Engines 912 A series 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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