EASA Regulations for Hamilton Sundstrand 54H

3 airworthiness directives and regulations affecting Hamilton Sundstrand 54H.

EASA SIB SAIB-2026-04

Propeller Hub Section

The Special Airworthiness Information Bulletin SAIB: 2026-04 is an FAA informational bulletin addressing the Hamilton Sundstrand Corporation Model 54H60 propellers. It highlights concerns about unauthorized electric arc scribe part markings on the propeller barrel surface that may increase susceptibility to cracking. This bulletin does not mandate regulatory action but provides important safety information for operators and maintenance personnel.

Feb 26, 2026

Safety Information BulletinMaintenanceSafety MgmtHamilton Sundstrand 54H

EASA AD US-2022-08-10

Propellers - Blades - Inspection / Replacement

The Federal Aviation Administration's Airworthiness Directive 2022-08-10 addresses safety concerns for Hamilton Sundstrand Corporation 54H model propellers, specifically those with 54H60 model propeller hubs. This final rule mandates inspections and potential replacement of propeller blades to prevent failures caused by corrosion and cracking. The directive applies to propellers installed on aircraft such as the US Marine Corps Reserve KC-130T and other affected operators.

May 20, 2022

Airworthiness DirectiveMaintenanceSafety MgmtHamilton Sundstrand 54HLockheed KC-130T

EASA AD US-2020-12-07

SUPERSEDED BY FAA AD 2022-08-10

FAA Airworthiness Directive 2020-12-07 is a final rule addressing certain Hamilton Sundstrand Corporation 54H60 model propellers installed on aircraft such as the US Marine Corps Reserve KC-130T. It mandates inspections due to blade failures caused by corrosion and intergranular cracking, which previously led to a fatal accident. This directive aims to prevent propeller blade separation and enhance flight safety.

Jul 14, 2020

Airworthiness DirectiveMaintenanceSafety MgmtHamilton Sundstrand 54HLockheed KC-130T