Purchasing helicopter parts is a critical decision that affects safety, performance, and regulatory compliance. Yet many operators still have questions about the differences between OEM parts, PMA parts, and overhauled or repaired components.

This article explains how to identify legitimate parts, avoid risks, and ensure proper documentation.

1. What Is an OEM Part?

OEM — Original Equipment Manufacturer
Parts produced by the original aircraft or system manufacturer.

Benefits:

• Maximum compatibility

• Full compliance with aircraft manuals

• Lowest risk of failure

Drawbacks:

• Higher cost

• Potentially longer lead times

2. What Is a PMA Part?

PMA — Parts Manufacturer Approval
Replacement parts approved by aviation authorities (FAA, EASA).

Benefits:

• More cost-effective

• Strict certification process

• Often more readily available

Drawbacks:

• Some operators do not accept PMA for specific aircraft or missions

3. Overhauled and Repaired Parts

Used components that undergo:

• Full inspection

• Replacement of critical sub-components

• Certification issuance (Form 1, 8130)

• Functional testing

A safe and economical alternative when sourced from reputable providers.

4. How to Verify Part Authenticity

Always check for:

✔ Valid certifications
✔ Complete traceability
✔ Original identification tags
✔ Inspection or overhaul reports
✔ A trusted and reputable supplier

Avoiding uncertified parts prevents safety hazards and regulatory violations.

5. Where to Buy Certified Parts

Specialized marketplaces like Flyriun connect operators with validated sellers, offering:

• Listings with full documentation

• Technical support

• Model-specific search filters

• Secure communication with vendors

🔍 Looking for OEM, PMA, or Overhauled helicopter parts with guaranteed traceability?
Browse the Flyriun Marketplace and connect with trusted suppliers worldwide.

➡️ flyriun.com