Optimized Componnt Performnce

FAA & EASA-Approved Solutions to Extend Component Life and Cut Downtime.

At APAS, DER-approved repairs are more than a cost-saving measure—they’re a smarter path to airworthiness. Our engineering-driven solutions restore non-serviceable components quickly, reliably, and without the high cost or delays of OEM replacements.

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Certified Alternative

What Are DER Repairs? A Certified Alternative to OEM Replacement

DER (Designated Engineering Representative) Repairs are FAA-authorized engineering solutions that restore components beyond standard OEM methods. These repairs are developed and approved by certified DERs through rigorous analysis, ensuring airworthiness, compliance, and cost-effectiveness.

Why DER Repairs Matter?

DER Repairs unlock new lifecycle value for parts that might otherwise be discarded—without compromising safety, compliance, or operational integrity

Quality You Can
Audit

Every procedure is documented and traceable to meet FAA, EASA, and customer QA standards.

Global Reach
& Standards

We invest in our people, our tools, and our processes to stay ahead of industry needs.

Culture of Continuous Innovation

We invest in our people, our tools, and our processes to stay ahead of industry needs.

Expertise Across Aircraft Platforms

From trainers to turbines — we service diverse fleets with component-level precision.

Why Choose DER Repairs? Faster, Smarter, More Sustainable

DER Repairs by APAS are not just compliant—they’re strategically designed to lower costs, reduce lead times, and extend component life. Ideal for overcoming OEM limitations, our repairs help keep your fleet flying without compromise.

Lower Maintenance Costs

Avoid the high expense of OEM replacements—especially for legacy and hard-to-source components.

Reduced Downtime

Minimize AOG risks with faster repair cycles and direct engineering support.

Engineering-Grade Accuracy

Every repair is built on FAA-approved data, structural integrity, and material compatibility.

Longer Service Life

Restore functionality and extend the life of non-serviceable parts with precision repair methods.

Environmentally Responsible

Reduce waste and support sustainability by repairing instead of replacing.

Rethink Repairs. Reclaim Your Budget.

Explore how DER Repairs from APAS can reduce costs, speed up turnaround, and extend component life—without compromising safety or compliance.

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Certified Alternative

DER Repairs in Action High-Impact Applications Across Aircraft Systems

At APAS, we specialize in DER-approved repair schemes for components that are critical, complex, or no longer supported by OEMs. Our engineering teams design and validate custom repairs that recover functionality and extend service life—helping you overcome obsolescence, long lead times, and cost barriers.

Actuators & Servos

Precision repairs including internal seal replacement and shaft resurfacing.

01

Heat Exchangers

Core tube restoration and fin straightening to recover cooling performance.

02

Landing Gear Subcomponents

Axle and bearing housing rebuilds that restore structural integrity.

03

Obsolete or Unsupported Parts

Custom-developed solutions when OEM repair paths no longer exist.

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Our DER Process

From Evaluation to Certification: A Trusted DER Repair Process

Every DER Repair at APAS follows a rigorous workflow rooted in engineering expertise, regulatory compliance, and technical precision. Our structured approach ensures each component returns to service meeting FAA/EASA airworthiness standards—with full traceability and documentation.
01

Initial Evaluation

Component is inspected to determine eligibility based on condition and FAA guidelines.
02

Engineering Assessment

Our DER and R&D teams conduct structural, materials, and performance analysis to define viable repair paths.
03

Repair Scheme Development

A customized repair procedure is created, documented, and prepared for regulatory submission.
04

FAA DER Approval

The repair scheme is reviewed and officially approved under 14 CFR Part 43, with full technical validation.
05

Execution & Testing

Repairs are performed in-house using specialized tooling, followed by functional and compliance testing.
06

Final Certification

After inspection, documentation is finalized and the component is released with FAA/EASA approval tags.
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Compliance & Engineering Standards

Full Regulatory Compliance. Zero Compromises.

All DER Repairs at APAS are executed under strict FAA and EASA guidelines, ensuring every component meets the highest safety, quality, and traceability standards. We don’t just meet regulations—we build our repair strategies around them.

FAA & EASA Part 145 Certified

Approved Repair Station authorized to perform and release DER repairs with full airworthiness documentation.

14 CFR Part 43 Alignment

Every repair conforms to FAA return-to-service standards, backed by DER approval and technical validation.

Integrated DER & R&D Teams

Our in-house engineers design, analyze, and document each repair with precision and full traceability.

Comprehensive Documentation Package

Includes approval forms, engineering data, test results, and release tags for regulatory audits and operator records.

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Talk to Our Engineering Team

Need help evaluating a non-serviceable part? Our FAA-certified engineers are ready to design a repair strategy tailored to your needs.

Contact Our MRO Team

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FAQs

Got questions? We've got answers. If you don't find what you're looking for, just ask!
Contact Our MRO Team
What types of aircraft components do your MRO services cover?

Our FAA & EASA-certified MRO services include inspection, repair, and overhaul of mechanical, electrical, electronic, and structural components — including landing gear, engines, avionics, and more.

Are your MRO facilities FAA and EASA 145 certified?

Yes. APAS operates as a fully certified FAA and EASA Part 145 Repair Station, ensuring all aircraft maintenance and repair services meet strict international aviation standards.

Do you provide 24/7 AOG support for grounded aircraft?

Absolutely. Our Aircraft on Ground (AOG) response team is available 24/7 to help minimize downtime and expedite the repair process, wherever your aircraft is located.

Can APAS handle DER repairs for out-of-scope components?

Yes, we specialize in FAA-approved DER (Designated Engineering Representative) repairs, providing cost-effective solutions when OEM repairs are not available or practical.

How do I request a quote for aircraft MRO services?

You can easily request a quote by filling out our RFQ form online or contacting us directly via email or phone. Our team will review your component details and respond promptly with pricing and turnaround times.