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217K22-1 – Goodyear Flight Eagle DT Tire 21 x 7.25-10 12 Ply NLG
Available now on the Airparts.aero Marketplace.
The Goodyear 217K22-1 Flight Eagle DT (Dual Tread) is a high-performance Nose Landing Gear (NLG) tire engineered specifically for the rigorous operating environments of high-speed business jets and regional aircraft. This 12-ply rated tire represents the pinnacle of Goodyear’s radial-adjacent design philosophy, utilizing a specialized Dual Tread configuration that optimizes both wet-track traction and dry-track wear characteristics. The 217K22-1 is a flight-critical component that must withstand the immense kinetic energy of high-velocity touchdowns while maintaining precise directional stability during high-speed taxi and takeoff rolls.
Designed for the Gulfstream series and other similar airframes, the Flight Eagle DT series incorporates Goodyear's proprietary rubber compounds and carcass construction to mitigate the effects of heat build-up—the primary enemy of aviation tire longevity. Its reinforced sidewall and crown structure are optimized to resist the compressive forces encountered during heavy-weight rotations. As a 12-ply rated component, it provides a superior strength-to-weight ratio, ensuring that the aircraft's weight is distributed evenly across the footprint to prevent flat-spotting and uneven tread wear, which are common causes of premature tire removal.
Key Features
Dual Tread (DT) Technology: Features a sophisticated tread pattern and compound blend that balances high-speed stability with exceptional hydroplaning resistance on wet runways.
12-Ply Rated Construction: Provides a robust carcass capable of handling high inflation pressures and heavy static loads without sacrificing the flexibility required for impact absorption.
Specialized Sidewall Compounds: Formulated with antioxidants and antiozonants to resist environmental degradation, ozone cracking, and the high-UV exposure characteristic of flight line storage.
Large Footprint Design: Optimizes the contact patch to ensure uniform pressure distribution, enhancing tread life and providing predictable braking response.
Enhanced Bead Construction: Designed for a high-integrity fit on the wheel rim, preventing tire-to-rim slippage during high-torque braking or aggressive nose-gear steering.
Technical Specifications
Part Number: 217K22-1
Manufacturer: Goodyear Tire & Rubber Company
Product Line: Flight Eagle DT
Size: 21 x 7.25-10
Ply Rating: 12 Ply
Component Type: Tubeless Nose Landing Gear (NLG) Tire
Speed Rating: Rated for high-speed business jet applications (typically up to 210 mph)
Material: High-tensile nylon cord carcass with proprietary synthetic/natural rubber tread compound
Governing Specifications: TSO-C62e
Certification: FAA-PMA / OEM Standard Equipment
Aircraft Compatibility
Gulfstream GIV / GIV-SP6
Gulfstream G300 / G400
Gulfstream G4507
Note: This tire is specific to the nose landing gear position. Always refer to the aircraft's Illustrated Parts Catalog (IPC) for serial number effectivity and specific wheel rim compatibility.
Applications
Nose Landing Gear (NLG): Primary tire for directional control and load bearing during ground operations.
High-Speed Taxi Operations: Engineered to minimize centrifugal growth and heat generation during long taxi distances.
Why Choose 217K22-1?
Choosing the Goodyear Flight Eagle DT 217K22-1 ensures that your aircraft operates within its certified performance envelope. Non-OEM or lower-rated tires may lack the thermal stability required for the high-velocity landings common in the Gulfstream fleet. The Flight Eagle DT’s ability to dissipate heat rapidly reduces the risk of carcass delamination and tread "chunking," providing a higher level of safety during the most critical phases of flight. Investing in Goodyear’s proven technology results in a lower total cost of ownership through extended removal intervals and reduced risk of unscheduled downtime.
The engineering of the 217K22-1 relies heavily on Materials Science and Dynamic Thermodynamics. The tire carcass is constructed from High-Tensile Nylon 6, cords, which are treated with a specialized dip to enhance adhesion to the rubber matrix. This nylon is chosen for its anisotropic properties, providing maximum strength in the direction of the load while allowing for the radial expansion necessary to absorb landing shocks.
The tread compound is a precipitation-strengthened elastomer blend containing high-surface-area carbon black for enhanced abrasion resistance and thermal conductivity. During a high-speed landing, the tire undergoes significant hysteresis, where energy is lost as heat during the cyclic deformation of the rubber. The Flight Eagle DT’s thin-groove geometry and specialized compound minimize this heat generation, preventing the internal temperature from reaching the glass transition temperature (T_g) of the polymer, which would lead to structural failure. This design ensures that the tire maintains its mechanical integrity and frictional coefficient even under extreme kinetic energy loading.
Note: The 217K22-1 is a flight-critical component. It must be maintained in accordance with Goodyear’s "Care and Maintenance of Aircraft Tires" manual and the aircraft's Maintenance Manual (AMM). Proper inflation pressure is the single most important factor in tire safety and longevity; under-inflation can lead to internal heat build-up and catastrophic carcass failure. Installation must be performed by a certified A&P mechanic.
