We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is a Core Lock?

Mary McMahon
By
Updated Feb 10, 2024
Our promise to you
WikiMotors is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WikiMotors, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Core lock is a complication that can emerge in jet engines when they experience a flameout in flight. Flameouts occur when the flame inside the combustion chamber is extinguished, causing the engine to stop working. Pilots follow a precise set of procedures in an attempt to restart the engine. If they are unable to do so, core lock can develop, and the engine will experience a catastrophic failure. It may be possible to land the aircraft safely using the other engines and gliding techniques.

Jet engines are machined to extremely precise standards. Their moving parts are designed to work in a well-choreographed ballet when the engine is in operation to generate high speed and efficiency. When the engine abruptly stops working, the temperature change can be substantial. The metal components inside the engine are not designed for these conditions, and they can start to contract.

As parts contract, they may change shape and size at different rates. The narrow tolerances of the engine design may mean that parts start to interfere with each other and they freeze up. Inside the jet’s core, the components cannot rotate, which means that efforts like a windmill restart, where the aircraft dives to force the engine to turn again, will not be effective. Even if the flame in the combustion chamber can be relit, the components of the engine will not longer fit together, and it can’t restart.

Aircraft are designed with a number of failsafe technologies to prevent flameouts, reducing the risk that pilots will find themselves in a situation where they might experience core lock. In the event the engines do stop, pilots have a checklist of procedures to follow to get the engine started as quickly as possible. If this fails, they can discuss emergency landing options to see if it is possible to bring the plane to a safe stop at an airport or area of level ground. While the aircraft may be damaged, it could be possible to protect passengers and cargo.

This type of engine failure has been linked with several crashes. For core lock to occur, pilots usually need to make several mistakes in the handling of an emergency, and the ultimate cause of a crash may be considered pilot error. Jet engine designers routinely test and redesign their engines to address concerns like core lock, working to design equipment that is less likely to fail, even in extreme conditions.

WikiMotors is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a WikiMotors researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments

Mary McMahon

Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

Learn more
WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.

WikiMotors, in your inbox

Our latest articles, guides, and more, delivered daily.