Service Instruction

SI 1443

Lycoming Engines

Issued
2025-11-18
Models covered
6
SI

SI 1443

Lycoming Engines

Issued 2025-11-18

NOT AN FAA REQUIREMENT — This is a manufacturer document. It is not an FAA Airworthiness Directive and compliance is not required by 14 CFR 39 unless an AD cites it.

Approved Slick Magnetos, Hartzell PowerUp Magnetos, and Lycoming Electronic Ignition System (EIS) on Lycoming Engines

Source: Lycoming Engines, retrieved 2026-09-01

Applies to 6 models in our index

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