FAA-listed STC holder

Acorn Welding Ltd. STCs

The Jun 30, 2026 FAA DRS snapshot lists 6 selected supplemental type certificates with status Current under Acorn Welding Ltd.. The records span 42 public aircraft directories and 4 modification categories. This is a research directory, not a claim that any specific kit or service is currently offered.

listed Current at snapshot

aircraft directories

modification categories

Feb 18, 2026

latest recorded revision

Recently revised records

Showing the 6 most recently revised records. Category directories provide the complete paginated discovery path.

6 displayed records.

Search every indexed record for this holder. The table below contains the recently revised records shown on this page.

Acorn Welding Ltd. supplemental type certificates, aircraft applicability, source status and dates
STC and modification	Aircraft / model / TC	Source status and dates	Holder and authority
SA12284IB Installation of Bulkhead Reinforcing Kit. Aircraft structures View record	Textron Aviation 182ETC 3A13 Textron Aviation 182FTC 3A13 Textron Aviation 182GTC 3A13 Textron Aviation 182HTC 3A13 Textron Aviation 182JTC 3A13 Textron Aviation 182KTC 3A13 Textron Aviation 182LTC 3A13 Textron Aviation 182MTC 3A13 Textron Aviation 182NTC 3A13 Textron Aviation 182PTC 3A13 Textron Aviation 182QTC 3A13 Textron Aviation 182RTC 3A13 Textron Aviation R182TC 3A13 Textron Aviation T182TC 3A13 Textron Aviation TR182TC 3A13	Current at cited snapshot Revised Feb 18, 2026 Application: Oct 30, 2022	FAA holder: Acorn Welding Ltd. FAA authority record
SA04587NY Installation of Acorn Welding C6SC1107-NG Exhaust stacks. Engine and powerplant View record	Viking Air DHC-6-100TC A9EA Viking Air DHC-6-200TC A9EA Viking Air DHC-6-300TC A9EA Viking Air DHC-6-400TC A9EA	Current at cited snapshot Revised Oct 28, 2021 Application: Aug 27, 2021	FAA holder: Acorn Welding Ltd. FAA authority record
SA04126NY Installation of Firewall Reinforcement. Engine and powerplant View record	Cessna Aircraft F182PTC A42EU Cessna Aircraft F182QTC A42EU Textron Aviation 182ETC 3A13 Textron Aviation 182FTC 3A13 Textron Aviation 182GTC 3A13 Textron Aviation 182HTC 3A13 Textron Aviation 182JTC 3A13 Textron Aviation 182KTC 3A13 Textron Aviation 182LTC 3A13 Textron Aviation 182MTC 3A13 Textron Aviation 182NTC 3A13 Textron Aviation 182PTC 3A13 Textron Aviation 182QTC 3A13 Textron Aviation 182RTC 3A13 Textron Aviation 182STC 3A13 Textron Aviation 182TTC 3A13 Textron Aviation T182TC 3A13 Textron Aviation T182TTC 3A13	Current at cited snapshot Revised Apr 26, 2018 Application: Feb 13, 2018	FAA holder: Acorn Welding Ltd. FAA authority record
SA02854NY Gross weight increase for use with floats to be accomplished. Aircraft performance View record	Textron Aviation 182PTC 3A13 Textron Aviation 182QTC 3A13 Textron Aviation 182RTC 3A13	Current at cited snapshot Revised Mar 14, 2018 Application: Feb 15, 2010	FAA holder: Acorn Welding Ltd. FAA authority record
SA00780NY The installation, removal, and maintenance of Acorn Welding s Heat Exchanger/Muffler (P/N: C1851D, C1851D-1, or C1851D-3). Other aircraft modifications View record	Cessna Aircraft 180GTC 5A6 Cessna Aircraft 180HTC 5A6 Cessna Aircraft 180JTC 5A6 Cessna Aircraft 180KTC 5A6 Cessna Aircraft 182GTC 3A13 Cessna Aircraft 182HTC 3A13 Cessna Aircraft 182JTC 3A13 Cessna Aircraft 182KTC 3A13 Cessna Aircraft 182LTC 3A13 Cessna Aircraft 182MTC 3A13 Cessna Aircraft 182NTC 3A13 Cessna Aircraft 182PTC 3A13 Cessna Aircraft 182QTC 3A13 Cessna Aircraft 182RTC 3A13 Cessna Aircraft 182STC 3A13	Current at cited snapshot Revised May 3, 2013 Application: Dec 4, 1997	FAA holder: Acorn Welding Ltd. FAA authority record
SA01580NY Replace existing front fuselage strut assemblies with Amtech Aeronautical Ltd strut assembly - front fuselage 302811-1 (LHS) and 302811-2 (RHS). Aircraft structures View record	de Havilland (Canada) DHC-2 Mk.ITC A-806 de Havilland (Canada) DHC-2 Mk.IITC A-806 de Havilland (Canada) DHC-2 Mk.IIITC A-806	Current at cited snapshot Revised Jan 31, 2003 Application: Nov 6, 2002	FAA holder: Acorn Welding Ltd. FAA authority record

Acorn Welding Ltd. STCs

Modification mix

Aircraft represented

Recently revised records

Installation of Bulkhead Reinforcing Kit.

Installation of Acorn Welding C6SC1107-NG Exhaust stacks.

Installation of Firewall Reinforcement.

Gross weight increase for use with floats to be accomplished.

The installation, removal, and maintenance of Acorn Welding s Heat Exchanger/Muffler (P/N: C1851D, C1851D-1, or C1851D-3).

Replace existing front fuselage strut assemblies with Amtech Aeronautical Ltd strut assembly - front fuselage 302811-1 (LHS) and 302811-2 (RHS).