Service Instruction

SI 1593

Lycoming Engines

Issued: 2025-05-13
Revision: -
Document type: SI
Models covered: 0

Opens your browser's print dialog. Choose “Save as PDF” to export a file. Keyboard: Ctrl+P or Cmd+P.

SI 1593

Lycoming Engines

Issued 2025-05-13

Manufacturer - not an FAA rule

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.

Incorrectly marked alternator belts

Source: Lycoming Engines, retrieved 2026-09-01

View on Lycoming Engines' site

We have not yet linked this bulletin to specific aircraft or engine models in our index.