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.
Safety Information BulletinMaintenanceSafety MgmtHamilton Sundstrand 54H