What to Look for When Choosing an Engine Component Provider

Choosing an engine component MRO provider affects more than the price on a single quote. Each shop determines how long your part is out of service, which markets it can be installed in afterward, and how much it is worth when you sell it.

Provider differences show up in specific areas: approvals, capabilities, repair standards, and the paperwork that comes with the component. Our in-depth guide covers the most important factors to check before you send out your next part, along with specific questions to ask each provider.

Confirm the Certifications Match Your Markets

In the United States, a component repair shop should hold an FAA repair station certificate. That certificate allows it to return repaired components to service. If your components will be installed or sold internationally, the provider needs approvals from the authorities in those markets:

• EASA for components going to operators and shops in the European Union
• UK CAA for components going to the United Kingdom
• CAAC for components going to Chinese airlines and overhaul facilities

Tri-Release Documentation

A part released under one authority may not be accepted under another and resolving that gap usually means added time and paperwork. When a provider holds several approvals, a single repair can be released for multiple markets at once. This is often called a tri-release or multi-release, and it widens the pool of buyers for that part. Our article on what FAA, EASA, and CAAC certification means for your parts covers this in more detail.

What to Request

Certificate numbers and copies of each approval. A legitimate repair station can provide them. Jet AirWerks publishes its FAA, EASA, UK CAA, and CAAC certificates on our certifications page.

Check Capability at the Part Level

An approval to work on “CFM56 components” does not mean a shop can repair every CFM56 part. Repair capability is granted by part number, and capability lists can differ between shops. Before you ship anything, confirm that your specific part number is on the provider’s capability list for each authority you need. This step prevents one of the most common delays: a part arrives, the shop can't repair it, and it has to be shipped back or sent somewhere else.

What to Request

A searchable capabilities list and how the shop processes part numbers that are not yet on it. Jet AirWerks maintains a capabilities list of more than 10,000 part numbers across the CFM56, CF6, and CF34 engine families. When a part is not listed but falls within our technical capabilities, we can evaluate it and add it to our FAA capabilities list while the part is in process.

Understand the Shop Repair Standards

Two shops can return the same part as “serviceable” using data. Some repairs follow the part manuals. Others use DER repairs, which are engineered alternatives approved by a Designated Engineering Representative instead of the original manufacturer. Some shops also install replacement parts made by another manufacturer.

DER repairs and replacement parts are approved for use. However, some customer specifications restrict them, which can limit where a repaired component is accepted or its resale value.

What to Request

Which repair data the shop uses, and whether it installs replacement parts or performs DER repairs on your components. Jet AirWerks performs repairs in accordance with the Original Equipment Manufacturer (OEM) manual. We repair and overhaul OEM parts only and source only OEM or OEM-approved spare parts.

Review the Shop Quality Certification

Regulatory approval shows that a shop is authorized to do the work. A quality management certification shows how consistently it does that work. For MRO organizations, the standard to look for is AS9110, a quality management standard written specifically for aviation maintenance, repair, and overhaul. It builds on ISO 9001 and adds specific quality requirements related to human factors. A shop with both certifications follows an audited, verifiable process for inspection, repair, and documentation.

What to Request

Current AS9110 and ISO 9001 certificates and their expiration dates. At Jet AirWerks, we hold dual ISO 9001:2015 and AS9110C certification. 

Find Out How Much Work is Done In-House

When a shop sends part of a repair out to a subcontractor, the component has to go through additional inspections and processes. Each step adds time and another point where documentation can go wrong. Shops with in-house processes keep more of the repair under one system and schedule. For engine components, it’s worth asking about the following:

• Thermal spray coating
• Precision CNC machining
• TIG welding
• Pressure testing

What to Request

A list of processes performed on-site, and which steps are typically subcontracted for your part numbers. Jet AirWerks performs these processes in-house at our 40,000-square-foot repair facility in Arkansas City, Kansas. Our standard terms state that we do not subcontract any service we are able to perform ourselves.

Review Part Documents

Paperwork can make or break an engine component. The release certificate records what was done and under which authority. Incomplete or inconsistent documentation can leave a serviceable part sitting in inventory because it can’t be verified.

What to Request

A sample release package, confirmation that repairs are recorded on the release, and whether additional releases cost extra. Jet AirWerks returns components with complete trace documentation. Tri-releases are included at no additional cost on eligible components.

Consider Disassembly Options

If you own whole engines, a provider that handles both disassembly and component repair can shorten the process. Parts removed during a teardown can move directly into repair without being shipped to another facility. Keep in mind, disassembly practices also matter. The Aircraft Fleet Recycling Association (AFRA) publishes best management practices for disassembly. You can learn more about the process in our article explaining aircraft engine teardown.

What to Request

Which engine models the shop disassembles, what tooling it uses, and whether it holds AFRA accreditation. Jet AirWerks provides CFM56-5B/7B engine disassembly and accessory disassembly using OEM tooling and processes.

Quick Checklist for Evaluating MRO Providers

Use this list when comparing quotes from different shops:

• FAA Part 145 certificate, plus EASA, UK CAA, or CAAC approvals
• Your exact part numbers appear on the capability list
• Current AS9110 and ISO 9001 certificates
• Key processes performed in-house
• Sample release documentation and multi-release pricing confirmed
• Estimated times quoted for your specific part numbers
• Warranty period and terms provided in writing
• Disassembly capability and AFRA accreditation

Contact Jet AirWerks Today

Choosing the right engine component MRO provider protects your schedule, the markets your parts can enter, and inventory. To get started, search your part numbers on our capabilities list, then request a repair quote. Include your part numbers, serial numbers, and the release types you need, and our team will respond with pricing and time estimate for your specific components.