AD 2026-04-11
Effective 04/08/2026 · Published 03/04/2026
Airworthiness Directives; Lycoming Engines
Summary
The FAA is superseding Airworthiness Directive (AD) 2024-21- 02, which applies to Lycoming Engines (Lycoming) model engines that have certain connecting rod assemblies installed. AD 2024-21-02 required repetitive oil inspections for bronze metal particulates and, if found, additional inspections of the connecting rod bushings for damage, proper fit, movement, and wear, and replacement if necessary. As terminating ac…