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Service Information Letter
From SKYbrary Wiki
| Article Information | ||
|---|---|---|
| Category: | Airworthiness | 
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| Content source: | SKYbrary | 
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| Content control: | EUROCONTROL | 
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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.