AD 2006-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies |
Unsafe Condition
Cracks in the cylinder assemblies and possible engine failure caused by separation of a cylinder head.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the ECi cylinder assemblies with part number AEL65102 series 'Classic Cast', having casting head markings EC 65099-REV-1.
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Compliance Time
Before further flight
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Affected Aircraft
Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, 'Parallel Valve' reciprocating engines, with ECi cylinder assemblies, part number AEL65102 series 'Classic Cast', having casting head markings EC 65099-REV-1, and serial numbers 1 through 9879 (SN may have an 'L' prefix for a long reach spark plug), installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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