FAA-listed STC holder
Seaplane Works Inc. STCs
The Jun 30, 2026 FAA DRS snapshot lists 22 selected supplemental type certificates with status Current under Seaplane Works Inc.. The records span 6 public aircraft directories and 7 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.
Modification mix
Recently revised records
Showing the 22 most recently revised records. Category directories provide the complete paginated discovery path.
22 displayed records.
Search every indexed record for this holder. The table below contains the recently revised records shown on this page.
| STC and modification | Aircraft / model / TC | Source status and dates | Holder and authority |
|---|---|---|---|
SA1103WEONE ONLY STC Model G-44A S/N 1427, R/N N414U only - Installation of Stewart Warner cabin heater.Cabin and interiorsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA380WEAny of the engine and propeller combinations listed on the Continuation sheet, page 3 of this STC with associated modifications of the nacelle, electric system, propeller and engine controls, oil, fuel and vacuum system; installation of new engine mount and reinforced and modified wing structures; installation of spray rails, rudder boost system and oil cooler.Engine and powerplantView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-1001Spray rail installation.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-1031Metalizing of wings aft of spar.Aircraft structuresView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-111Installation of Lycoming GO-480-C1D6 engines and Hartzell propellers, HC-83X20-2C/9333-C3 propellers, and associated modifications.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-287Changing Elevator Trim Tab Setting as follows: Original Setting - 10 deg Up 33 deg Down New Tab Setting - 22 deg Up 17 deg Down.Flight controlsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-296ONE ONLY STC Model G-44A, (N41984 only) - Modification of empennage control system to eliminate interference with escape hatch.Safety and emergency equipmentView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-467ONE ONLY STC Model G-44 (S/N 1415, CF-KPT only) - Installation of four Teco Model TE-432 seats.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-64Installation of Lycoming GO-435-C2B engines, Hartzell HC-82X20-2A/9333C-3 or HC-83X20-2A/8433-0 propellers, and associated modifications.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-65Installation of Lycoming GO-480-B1D engines, Hartzell HC-83X20-2A/8433-0 or HC-83X20-2A/8433H propellers, and associated modifications.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-67Installation of window in right-hand side of hull.Aircraft structuresView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-928Retractable tip float installation.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-958Increase in capacity of each main fuel tank from 54 to 88 gallons.Fuel systemsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-959Stewart Warner heater installation.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-960Metalizing of flaps.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-961Metal cabin door and frame assembly and installation.Cabin and interiorsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-963Rotary beacon installation.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-964Landing light assembly and installation.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-966Rudder and elevator control cable reroute.Flight controlsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-967Installation of Picture Window.Aircraft structuresView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4-970Installation of four Teco Model TE-432 seats.Other aircraft modificationsView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |
SA4774NMRemoval of the two existing engines and installation of one AVCO Lycoming Model TIO-540-J2BD and one LTIO-540-J2BD engine with Hartzell Model HC-C3YR-2UF/FC9587A-10 and HC-C3YR-2LUF/FJC9587A-10 propellers.Engine and powerplantView record |
| Current at cited snapshot Application: | FAA holder in the Jun 30, 2026 snapshot: Seaplane Works Inc. Holder and applicability retain that snapshot while a source correction is reviewed. Review the FAA source facts confirmed on Sep 6, 2026 and both dated sources. FAA authority record |