Business · 22/06/1994Updated: 10/16/2026 · 1 min read

Airworthiness Directives: Sikorsky Aircraft Model S-58 and S-58T Series Helicopters

Summary

The Federal Aviation Administration (FAA) proposes a new airworthiness directive for Sikorsky Aircraft Model S-58 and S-58T series helicopters to address reports of transmission main gear box ring gear failures due to slow-growth fatigue cracks.

Original source language: Federal Register — Transportation DepartmentOpen original release →

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