Skip to content

Aircraft STC directory

Hamilton Standard Division 12D40 STCs

The Jun 30, 2026 FAA DRS snapshot contains 6 selected supplemental type certificates with status Current whose public applicability data names the Hamilton Standard Division 12D40. Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

6
listed Current at snapshot
3
holder directories
3
modification categories
Nov 18, 2019
latest recorded revision

Modification demand surface

Propellers4
Other aircraft modifications1
Engine and powerplant1

Recorded holders

Pacific Propeller International LLC3Aircraft Development Co1Northwest Propeller Services Inc.1

Recently revised 12D40 STCs

Showing the 6 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SP7WEPropellers

Installation of Efficiency Aircraft Components, Inc. propeller blades in Hamilton Standard hubs as follows: 1. E.A.C.AG-100-2 propeller blades in 2D30 and 12D40 hubs in accordance with FAA sealed E.A.C. Installation Instructions No. 100 and in 3D40 hubs in accordance with FAA sealed E.A.C. Installation Instructions No. 400. 2. E.A.C. AG-200-2 propeller blades in 22D30, 22D40, and 23D40 hubs in accordance with FAA sealed E.A.C. Installation Instructions No. 200, 300, and 500 respectively.

FAA holder: Pacific Propeller International LLC

View record