Tronair 14-6868-6000 Main Landing Gear Thread Protector

The Tronair 14-6868-6000 main landing gear (MLG) thread protector is engineered to shield the exposed axle threads of an aircraft’s main landing gear when the wheel assembly is removed for service or storage. Covering these critical threads helps prevent corrosion, nicks, and contamination that could compromise proper reinstallation. Protecting these precision threads is essential for maintaining landing gear integrity and safety.

This thread protector is commonly used on Bombardier Global series aircraft, including the Global Express, Global 5000, Global 6000, and Global 6500, and is designed for the specific MLG axle configuration.  Always confirm thread size and aircraft model compatibility with the aircraft maintenance manual or a qualified technician before installation.

The protector is made from durable metal – often aluminum or similar lightweight, corrosion-resistant alloys – to withstand environmental exposure and handling during maintenance activities. This rugged construction helps absorb incidental contact and protects the axle threads without adding excessive weight.

Landing gear threads are precision-machined and essential for safely securing wheels and brake assemblies. Without protection, threads can accumulate dust, grit, or corrosion, leading to cross-threading, improper torque, or costly repairs. Using a thread protector ensures a smooth reinstallation and preserves structural integrity.

By sealing and covering the exposed MLG axle threads, this protector blocks moisture, dirt, and environmental contaminants from settling into the threads. This barrier effect reduces the likelihood of oxidation and rust forming, which is especially beneficial in humid or coastal operating environments.

When an aircraft is in storage or parked for extended periods, unprotected threads can oxidize or collect debris. A thread protector reduces these risks, meaning less cleanup and prep work before the landing gear is returned to service. This helps minimize AOG turnaround time and maintenance costs.

While the protector itself is not a compliance certificate, using proper thread covers aligns with best practices in corrosion prevention programs required by many maintenance organizations and aviation authorities. Documenting the use of protective parts like this in maintenance records supports overall compliance with corrosion control requirements.

When not installed, the thread protector should be stored in a clean, dry area – ideally in a labeled parts cabinet or maintenance bin. Storing it with protective caps or wrapping helps keep its internal surfaces free from contaminants and ready for the next maintenance cycle.

Before installation, technicians should clean the exposed axle threads and inspect them for any signs of damage, corrosion, or wear. The protector itself should also be checked for dents, burrs, or debris that could transfer to the threads. A proper pre-installation inspection helps ensure that both the protector and the landing gear threads remain in optimal condition.