Aircraft Welding
Aircraft Welding is a core knowledge area on the AMT — Airframe FAA written exam. This hub collects our 16 in-depth, ACS-aligned aircraft welding articles — each written in plain English and grounded in the official FAA handbooks. Work through them below, then drill the topic with practice questions.
Oxyfuel Welding Equipment Setup and Operation
Oxyfuel welding uses a controlled mixture of oxygen and fuel gas to produce a high-temperature flame for joining, cutting, and repairing aircraft metal structures — mastering equipment setup and safe operation is fundamental for AMT airframe technicians.
TIG Welding (GTAW) Techniques for Aircraft Structures
TIG (GTAW) welding uses a non-consumable tungsten electrode and inert shielding gas to produce clean, precise welds on aircraft-grade metals including steel, aluminum, and titanium.
Aircraft Welding Safety Procedures and Hazard Controls
Aircraft welding generates intense heat, toxic fumes, UV radiation, and fire risks that demand strict safety protocols; AMTs must understand and apply hazard controls before, during, and after every welding operation.
MIG Welding (GMAW) Applications in Aircraft Repair
MIG welding (GMAW) uses a continuously fed wire electrode and shielding gas to join aircraft metals, offering speed and versatility in airframe repair when applied within FAA-approved procedures.
Weld Joint Design and Fit-Up for Aircraft Structures
Proper weld joint design and fit-up are fundamental to producing strong, airworthy aircraft welds — the right joint geometry and precise part alignment directly determine the quality and strength of every weld in an aircraft structure.
Steel Tube Fuselage Welding Inspection and Repair
Steel tube fuselage frames depend on high-quality welds for structural integrity; AMTs must recognize acceptable welds, identify defects, and perform or oversee repairs per FAA standards.
Weld Defect Identification and Rejection Criteria
Welding defects such as porosity, cracks, undercutting, and incomplete fusion can compromise structural integrity in aircraft; AMT airframe technicians must recognize and reject welds that fail FAA-defined criteria.
Aluminum Welding Techniques for Aircraft Components
Aluminum welding in aircraft maintenance demands precise heat control, proper filler selection, and approved techniques to restore structural integrity without compromising the base metal's properties.
Welding Chromoly 4130 Steel in Aircraft Fabrication
Chromoly 4130 steel is the FAA-approved backbone of welded aircraft structures; understanding its metallurgy, joint preparation, and post-weld treatment is essential for airframe technicians.
FAA Regulations and Approval Requirements for Welded Repairs
FAA regulations govern which welded repairs require approved data, who may perform them, and how airworthiness is restored; understanding these rules is essential for any AMT working on structural or pressure-critical welds.
Weld Bead Characteristics and Quality Indicators
Learn to read a weld bead like an expert: understand what makes a structurally sound, FAA-acceptable weld versus a defective one, and know exactly what inspectors look for on airframe welds.
Welding Symbols and Blueprint Reading for Aircraft Repairs
Welding symbols on aircraft blueprints communicate precise joint requirements without lengthy text notes; understanding each element of the standard welding symbol is essential for airframe technicians performing FAA-compliant repairs.
Rosette and Patch Welding Techniques for Tube Structures
Rosette and patch welding are FAA-approved techniques for repairing and joining steel tube airframe structures, requiring precise execution to maintain structural integrity and airworthiness.
Preheating and Post-Weld Heat Treatment of Aircraft Metals
Preheating and post-weld heat treatment are critical welding procedures that prevent cracking, relieve residual stress, and restore material properties in aircraft structural metals.
Distortion Control and Stress Relief in Aircraft Welding
Distortion and residual stress are two of the most critical challenges in aircraft welding; controlling them through proper technique, fixturing, and heat treatment ensures structural integrity and airworthiness.
Non-Destructive Testing Methods for Welded Aircraft Joints
Non-destructive testing (NDT) methods allow aviation maintenance technicians to inspect welded aircraft joints for internal and surface defects without damaging the structure, ensuring airworthiness and safety.
More AMT — Airframe subjects
Articles are original summaries grounded in the public-domain FAA handbooks and cite their source. ACS-aligned study aids — not a substitute for the official handbooks or regulations.