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November 3, 2025
Structural Aircraft On Ground Repair: Faster, Compliant Return to Service.
AOG structural repair, step-by-step. Operator actions, field controls, and audit-ready RTS under FAA/EASA Part 145.
Certified Repairs
Engineering-certified repair solutions that restore major structural components faster and at a fraction of OEM replacement costs—keeping your fleet in service and on budget.
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A DER (Designated Engineering Representative) Repair is an FAA-approved engineering solution created when no standard repair or OEM method is available.
At DAS, we apply this expertise to large structural components—from fuselage panels and wing sections to empennage assemblies and cargo doors. We support composite and metallic aerostructures, including carbon fiber, fiberglass, Kevlar, and Nomex® honeycomb, with both composites repairs and sheet metal repairs.
Working with our FAA-certified DER engineers, we develop repair schemes that restore airworthiness, extend service life, and avoid costly replacements. Every solution is validated through structural analysis, material compatibility checks, and rigorous performance testing—including mechanical and thermal testing (compression, shear, tension)—ensuring compliance with FAA/EASA standards.
Our DER-approved repair capabilities cover a wide range of major aircraft structures, returning critical components to service with full compliance and reliability.
Trust DAS for FAA/EASA-approved DER repairs that restore critical aircraft structures with precision, compliance, and efficiency.
A DER (Designated Engineering Representative) repair is an FAA-approved engineering solution used when no standard or OEM repair method is available. We apply DER to large aircraft structures to restore airworthiness and extend service life.
Yes. All DER work meets or exceeds FAA/EASA Part 145 and 14 CFR Part 43. Repairs are validated via structural analysis, material testing, and full regulatory documentation.
Nacelles (fan/inlet/core cowls, thrust reversers), radomes, flight-control surfaces (flaps, slats, rudders, ailerons, spoilers, tabs), fuselage/wing panels, select doors/ducts/fairings, floor panels, and specialized items like strut fairings and engine ducts.
Typically 30–70%, depending on component complexity and condition; DER often delivers faster turnaround than OEM lead times.
Most DER structural repairs complete in 10–20 business days, contingent on damage and data approval—often quicker than sourcing replacement parts.
Often, yes. Where approved data and conditions allow, our mobile structural teams execute DER repairs on site to accelerate RTS.
QCR for minor damage, bonded repairs with controlled heat/pressure curing, and bolted solutions for larger restorations—selected per engineering assessment. Both composites and sheet metal are in scope.
NDT (UT A/C-scan, ET, MPI, FPI), material/cure verification, control-surface balance checks, and functional/structural tests per the approved data.
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