AD 2009-26-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies |
Unsafe Condition
Cracks at the head-to-barrel interface of ECi cylinder assemblies, leading to cylinder head separation and potential engine failure, which could result in loss of control of the aircraft.
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Required Actions
Initial and repetitive visual inspections and compression tests to detect cracks at the head-to-barrel interface. Replace cylinder assemblies found cracked. Replace certain cylinder assemblies at new, reduced times-in-service.
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Compliance Time
Within 50 flight hours after the effective date of this AD.
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Affected Aircraft
Lycoming Engines (formerly Textron Lycoming) models 320, 360, and 540 series, 'Parallel Valve' reciprocating engines, with ECi cylinder assembly, part number (P/N) AEL65102 series 'Titan,' and with cylinder head, P/N AEL85099, installed. Serial numbers S/N 1138-02 through S/N 42179-30 are affected.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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