APC strengthens folding-propeller blade-to-hub transition
APC updated nine folding-propeller designs to increase structural capability at the blade-to-hub transition.
Evidence notes
- The updated range covered folding propellers from 7x4F through 14x10F and retained compatibility with existing hub assemblies.
- Each revised blade carried an F stamp so operators could distinguish the strengthened version.
- Two additional folding hubs supported 6-millimetre motor shafts and accepted adapter rings for other shaft sizes.