Manufacturers Brands/Hartzell Aviation/Hartzell Aerospace Welding/Acorn Welding

Acorn Welding

A Hartzell Aerospace Welding company

Acorn Welding designs, manufactures, and repairs aircraft exhaust systems, engine mounts, and welded assemblies supporting general aviation and specialty aircraft platforms. With decades of experience and a broad catalog of PMA-approved products, Acorn Welding delivers durable, field-proven solutions across a wide range of aircraft makes and models.

As part of Hartzell Aerospace Welding, Acorn combines certified welding expertise with precision fabrication to support both new production and overhaul requirements.

To contact Acorn Welding call: 1-888-388-8803

Core Capabilities

Aircraft Exhaust Systems
PMA-approved exhaust systems and components supporting a wide range of general aviation aircraft, including legacy and specialty platforms.

Engine Mounts
New production and repair of engine mounts built for structural integrity, durability, and long-term performance.

Welded Assemblies & Fabrication
Custom and production welded components including airboxes, fuel tanks, and specialty structures.

Manufacturing & Fabrication

Acorn Welding supports a broad range of aircraft applications with dedicated tooling and repeatable manufacturing processes.

Extensive product coverage across multiple aircraft makes and models
Precision fabrication using fixed tooling and fixtures
Certified welding processes to aerospace standards
Support for both legacy aircraft and current production platforms

Repair & Overhaul

Certified repair capabilities supporting:

Exhaust system repair and overhaul
Engine mount repair
Structural weld repair and reinforcement

Certifications

Acorn Welding is a Transport Canada Civil Aviation approved Maintenance Organization #100-91. We are also one of the very few EASA-approved Welding Facilities. Our approval Number is EASA.145.7212

We are also a Transport Canada Civil Aviation-approved manufacturer. Acorn Welding holds ratings for Welding, Components, NDT, and Structures as well as distribution of aviation parts.

For your convenience, our approval certificates are provided online.: