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Aircraft STC directory

Sierra Hotel Aero Navion A (Army L-17B and L-17C) STCs

The Jun 30, 2026 FAA DRS snapshot contains 28 selected supplemental type certificates with status Current whose public applicability data names the Sierra Hotel Aero Navion A (Army L-17B and L-17C). Use it to identify modification scope and recorded holders—not to determine serial-number effectivity, compatibility, installation approval, or commercial availability.

28
listed Current at snapshot
10
holder directories
7
modification categories
May 27, 2025
latest recorded revision

Modification demand surface

Engine and powerplant8Other aircraft modifications8Landing gear and brakes4Flight controls4Avionics2Aircraft connectivity1Electrical systems1

Recorded holders

Brittain Industries, Inc5Navion Customs, LLC4Hartzell Engine Technologies, LLC3S-TEC Corporation3Russell Herrington2Deluca of California Inc.2Alcor LLC1General Aviation Modifications Inc.1Avidyne Corporation1Aircraft Components Inc1

Recently revised Navion A (Army L-17B and L-17C) STCs

Showing the 28 most recently revised records. Each entry links to the FAA source and separates public approval data from private commercial claims.

SA02125SEEngine and powerplant

Installation of a Continental E-225-4 engine, a Hartzell HC-12V20-7D propeller with V8433N blades, and associated accessories and hardware with the existing updraft cooling system in Navion A, serial number (s/n) NAV-4-182 4 per Substantiating Data for E-225 Engine Installation In Navion A Model Aircraft , document number WD189-D11, Revision IR, dated December 10, 2010. Maintenance shall be per the Instructions for Continued Airworthiness (ICA) Document WD189-ICA, Revision (A), dated March 28, 2011, or later FAA-approved revision.

FAA holder: Lyle K. Hockenson

View record