Maintaining the structural integrity of an aircraft hinges on proper torque. This is where having the best aircraft torque wrenches becomes important. You can’t just grab any old wrench from the toolbox when it comes to aviation.
We’re talking about thousands of fasteners, each with a specific torque requirement. These fasteners endure intense vibrations and extreme temperatures. When lives are on the line, there’s no room for error. That’s why we will explore the world of torque wrenches for aircraft maintenance in this post.
Types of Torque Wrenches Used In Aviation
Just like different types of planes, there are different types of torque wrenches. Each has strengths, weaknesses, and specific aviation tasks.
Click Type Torque Wrenches
Click-type torque wrenches, also known as micrometer or “clicker” wrenches, are common. Think of them as your go-to for everyday tasks.
When you reach the desired inch-pound torque, these wrenches make an audible ‘click’ sound. They offer a good balance of accuracy, ease of use, and affordability.
Beam Type Torque Wrenches
While click-type torque wrenches are popular for general applications, beam types are known for their accuracy. Torque Products Canada states these wrenches are more reliable long-term.
They don’t have a complex internal mechanism. However, they can be more difficult to use in tight spaces, which are common on aircraft.
Digital Torque Wrenches
Digital torque wrenches offer a more high-tech option. They often have features for aircraft work, which can make any mechanic’s job easier.
Factors to Consider When Choosing a Torque Wrench for Aircraft
Selecting the correct torque wrench for aircraft maintenance is not simple. Here are key factors to consider:
1. Accuracy
Accuracy is essential when working on aircraft. The torque wrench you choose must meet the industry standards set by organizations such as the International Organization of Standardization (ISO).
2. Drive Size
You need the correct drive size for your torque wrench to match the fasteners. Aircraft fasteners can be small, especially if you are dealing with instruments or electronics.
For more about aircraft tools, review a helpful post we put together on the best aircraft maintenance tool kits.
3. Calibration
Regular calibration is crucial for aircraft torque wrenches. A good rule of thumb is every 5,000 uses or 12 months. Some professionals, especially in aerospace, calibrate every 2,500–3,000 uses or every six months.
Remember, even a slight deviation in torque can be problematic. If you are looking into a career as an aircraft mechanic you may want to check out the best aircraft maintenance schools around.
Proper Use and Maintenance of Aircraft Torque Wrenches
Owning a top-notch aircraft torque wrench is important, but you also need to know how to maintain it.
Cleaning and Storage
A clean tool is a happy tool. Dirt, grime, and corrosive materials impact accuracy. Proper storage is equally vital. Keep your torque wrenches in a clean, dry environment, ideally in a toolbox or dedicated storage system. This preventative measure can extend the life of your tools.
Calibration
Calibration is like a tune-up for your torque wrench; it is critical in keeping your aircraft safe. Ensure you send your torque wrenches to an accredited calibration laboratory for calibration. This process verifies their accuracy and ensures they meet the required standards.
The Consequences of Incorrect Torque: A Real-World Example
Using the wrong torque on an aircraft can be disastrous. Let’s consider a real-world scenario involving a small, private aircraft. During routine maintenance, a mechanic used a torque wrench that was not calibrated.
He tightened the bolts on the engine mount. Because his torque wrench provided inaccurate readings, he significantly under-torqued the bolts.
The engine partially separated from the aircraft during flight. Although no one was hurt, you can see how essential the best aircraft torque wrenches are. Maintaining proper torque in an aircraft is essential for safety.
Conclusion
Whether you’re a mechanic or an aviation enthusiast tackling DIY projects, the best aircraft torque wrenches are essential for safety and precision. And remember, with great tools comes great responsibility. Take care of your tools, make sure they’re calibrated, and use them correctly. Enjoy many successful years in the amazing world of aviation.
FAQs about best aircraft torque wrenches
What torque wrench does NASA use?
NASA utilizes torque wrenches from different manufacturers, depending on the specific application and torque requirements. However, Proto, Snap-on, and CDI are some commonly used brands.
These brands are known for producing high-quality, precise, and reliable torque wrenches used in aerospace.
Which torque wrench is most accurate?
Beam-type torque wrenches are generally the most accurate. Unlike click-type wrenches, which have internal mechanisms prone to wear and tear, beam-types rely on simple deflection.
They are durable because they lack moving parts. But beam types can be challenging to read in tight spots.
What is the most common type of torque wrench used in aviation?
Click-type torque wrenches are very common in aviation. Mechanics can use and calibrate these wrenches.
What torque wrenches do mechanics use?
Aircraft mechanics use a range of torque wrenches. Click type and beam type are the most common, depending on the specific application and the mechanic’s preference.