Service Information Letter

Service Information Letter

SIL

Definition

This document, or a similarly-named one, is used by manufacturers of aircraft, their engines or their components to communicate details of advisory action or other ‘useful information’ about their products which may enhance safety, reliability or reduce repetitive costs.

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Cite This Page SKYbrary Aviation Safety. (June 25, 2022). Service Information Letter. Retrieved February 2, 2026 from https://skybrary.aero/articles/service-information-letter UID: 1615
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