What Is a PMA Part and Is It Safe to Use?

As a pilot or aircraft mechanic, you’ve likely come across different types of certifications for aircraft parts. We recently explored the importance of the FAA Form 8130-3 for part traceability. But what about parts that aren’t made by the aircraft’s original manufacturer? That’s where Parts Manufacturer Approval, or PMA, comes in.

This is a common point of confusion, and we’re here to clear it up. So, what exactly is a PMA part, and can you trust it with your aircraft?

What Is a Parts Manufacturer Approval (PMA)?

A Parts Manufacturer Approval (PMA) is an official FAA authorization for a company to produce a replacement part for a type-certificated aircraft, engine, or propeller.

In simple terms, it means a company other than the Original Equipment Manufacturer (OEM) has received FAA approval to design and/or produce a part that is identical to or an improvement on the original. This is a critical distinction because it creates a competitive marketplace, offering aircraft owners and operators more options for parts.

OEM vs. PMA: What’s the Difference?

The key difference lies in who makes the part, not the part’s quality or airworthiness.

• OEM Parts: These are parts made by the company that originally designed and built the aircraft. For example, a rudder cable made by Cessna for a Cessna 172 is an OEM part.
• PMA Parts: These are parts made by a company other than the OEM, but they are fully approved by the FAA to be installed on a specific aircraft. A company with a PMA can produce the same rudder cable for that Cessna 172.

The important takeaway is that both an OEM part and a PMA part are fully FAA-approved and must meet the same strict standards for airworthiness and safety.

Is It Safe to Use PMA Parts?

Yes, it is absolutely safe to use PMA parts when sourced from a reputable supplier.

The FAA has a rigorous approval process for PMA parts that ensures they are held to the same safety standards as their OEM counterparts. Before a PMA is granted, the manufacturer must demonstrate that their part conforms to the original design and meets all applicable airworthiness requirements. This process often involves extensive testing, analysis, and quality control oversight by the FAA.

By purchasing a PMA part from a trusted vendor, you can be confident that it has passed all necessary inspections and is fully certified for use on your aircraft.

The Benefits of Using PMA Parts

Choosing PMA parts can offer several significant advantages:

• Cost Savings: Because the market is competitive, PMA parts are often more affordable than OEM parts. This can lead to substantial savings on maintenance and repair costs, especially for older or more common aircraft models.
• Availability: Sometimes, OEM parts are out of production or on backorder, making a PMA part the only readily available option.
• Improved Design: Some PMA parts are designed to be an improvement over the original, offering enhanced durability, performance, or a longer service life.

The Bottom Line: Your Choice with Confidence

At Aviation Parts Hub, we believe in providing you with all the information you need to make the best decision for your aircraft. Our inventory includes both OEM and FAA-approved PMA parts, and we are committed to sourcing them only from certified suppliers.

Whether you choose an OEM or a PMA part, you can be sure that it is traceable, airworthy, and backed by the highest standards of safety and integrity.