The aviation industry uses many technical terms that can be confusing, especially if you’re new to aircraft parts or maintenance. This glossary explains the most common aviation terms in a simple way. Whether you’re buying, selling, or sourcing parts, this page will help you understand the basics quickly.
Start with the basics like AOG, MRO, and avionics. Understanding these key terms will help you search for parts faster, communicate clearly with suppliers, and avoid costly mistakes. This glossary gives you quick, simple explanations to make aircraft parts sourcing easier and more efficient.
AVIATION GLOSSARY
New to aviation terms?
The aviation industry is full of technical terms that can be hard to understand, especially if you’re new to aircraft parts, maintenance, or sourcing. From AOG situations to MRO operations and avionics systems, these terms are used every day by airlines, MROs, and parts suppliers.
This glossary is designed to make things simple. It explains the most common aviation terms in clear, easy language so you can quickly understand what they mean and how they apply to your needs. Whether you’re buying parts, selling inventory, or managing aircraft operations, knowing these terms will help you make better decisions and avoid confusion.
Aviation Glossary
What is AOG (Aircraft on Ground)?
AOG means an aircraft cannot fly due to a technical issue. This is urgent because every hour on the ground costs money. Airlines and MROs need fast access to parts to fix the problem and get the aircraft back in service.
What is MRO (Maintenance, Repair, and Overhaul)?
MRO refers to all the work needed to keep an aircraft safe and operational. This includes routine maintenance, repairs, and full overhauls of parts and systems.
What is Avionics?
Avionics are the electronic systems used in aircraft. This includes navigation, communication, radar, and flight control systems like GPS, radios, and autopilot.
What is Aircraft Aftermarket?
The aircraft aftermarket is the industry that supports aircraft after they are built. It includes spare parts, repairs, maintenance services, and upgrades.
More Common Aviation Terms
What is an RFQ (Request for Quote)?
An RFQ is a request sent to suppliers to get pricing and availability for specific aircraft parts. It helps buyers compare offers quickly.
What is an OEM (Original Equipment Manufacturer)?
An OEM is the company that originally makes aircraft parts or equipment. OEM parts are new and built to the original design standards.
What is a PMA Part?
A PMA (Parts Manufacturer Approval) part is made by an approved manufacturer, not the original OEM, but still meets aviation safety standards.
What is a Serviceable Part?
A serviceable part is a used part that has been inspected, tested, and approved for use again.
What is Overhauled Equipment?
Overhauled equipment has been fully inspected, repaired if needed, and restored to meet required standards before reuse.
What is Traceability in Aircraft Parts?
Traceability means having full records of a part’s history, including origin, ownership, and maintenance. It’s important for safety and compliance.
What is an Airworthiness Certificate?
This certificate confirms that an aircraft or part meets safety standards and is approved to operate.
What is a Part Number (PN)?
A Part Number is a unique code used to identify a specific aircraft part. It helps avoid mistakes when ordering.
What is a Serial Number (SN)?
A Serial Number is a unique identifier for an individual part. It is used to track its history and usage.
What is Lead Time?
Lead time is the time it takes from ordering a part to receiving it.
What is AOG Support?
AOG support refers to urgent services that help find and deliver parts quickly when an aircraft is grounded.
Use this page as a quick reference whenever you come across unfamiliar terms in listings, quotes, or technical documents. Understanding these terms makes it easier to find the right aircraft parts and work with suppliers with confidence. If you’re looking for parts or need quotes fast, you can submit an RFQ and connect with trusted suppliers worldwide.
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Final Thoughts
Having a clear understanding of aviation terms makes a big difference when working in the aircraft parts industry. It helps you communicate better with suppliers, compare offers with confidence, and avoid delays caused by misunderstandings. Whether you’re dealing with urgent AOG requests, routine maintenance, or sourcing hard-to-find parts, knowing the right terminology can save you time and reduce risk.
If you’re ready to move forward, you can easily request quotes and connect with trusted suppliers worldwide.
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