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D22698172-108 – Nose Landing Gear Assembly for ATR-72 Aircraft
Available now on the Airparts.aero Marketplace.
Overview
The D22698172-108 is a genuine OEM, flight-critical complete nose landing gear (NLG) assembly, engineered for the ATR 42 and ATR 72 series of regional airliners. Manufactured by industry leaders like Safran Landing Systems to ATR's exact specifications, this is the entire nose gear unit—a complex, primary structural system designed to support the forward fuselage, provide shock absorption, and facilitate ground steering. Fabricated from ultra-high-strength steel alloys and comprised of numerous precision-machined components, this assembly is built to withstand the rigorous operational demands of high-cycle airline service.
Key Features
- Oleo-Pneumatic Shock Strut: The core of the assembly is a large oleo-pneumatic shock strut. This integrated hydraulic and pneumatic system is designed to absorb and dissipate the immense kinetic energy of landing and smooth out shocks during taxiing, protecting the airframe from structural fatigue.
- Fully Integrated Steering System: Includes the provisions and attachment points for the hydraulic steering actuator and collar. This system allows for precise nose wheel steering during ground operations, which is essential for maneuvering the aircraft on taxiways and at the gate.
- Forward-Retracting Kinematics: The entire assembly, including the main strut, drag brace, and support links, forms a complex kinematic mechanism designed to retract forward and upward smoothly into the nose gear bay, ensuring reliable extension and retraction.
- Ultra-High-Strength Steel Construction: The primary structural components are forged and machined from ultra-high-strength VAR (Vacuum-Arc Remelt) steel alloys, such as 300M. This provides the exceptional strength and fatigue resistance required to handle the immense loads of landing, braking, and turning.
- Complete, Ready-to-Install Assembly: As a complete assembly, it includes the main shock strut, piston, torque links (scissors), drag brace, and other key structural elements, ready for installation of the wheels, tires, and steering actuator.
Technical Specifications
- Part Number: D22698172-108
- Other Part Number: D22698172-4/-108
- Component Type: Complete Nose Landing Gear (NLG) Assembly
- OEM Manufacturer (Typical): Safran Landing Systems
- Shock Absorption: Oleo-Pneumatic
- Steering: Hydraulically Actuated
- Retraction: Forward Retracting
- Material: Ultra-High-Strength Steel Alloys & Aerospace-Grade Aluminum
- Certification: EASA / FAA Production Approval with full material, NDT, and process traceability.
Aircraft Compatibility
The D22698172-108 is the specific nose landing gear assembly for the ATR family of regional turboprop airliners. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification.
- Primary Aircraft Models:
- ATR 42 (all series)
- ATR 72 (all series)
Applications
The D22698172-108 is a primary aircraft system with several flight-critical roles:
- Landing & Ground Operations: The sole means of supporting, steering, and providing shock absorption for the front of the aircraft on the ground.
- Structural Replacement: Used to replace a complete nose gear assembly that has reached its life limit or has sustained non-repairable damage from a hard landing, corrosion, or other event.
- Aircraft Build & Major Overhaul: The factory-standard assembly for aircraft production and major structural overhauls.
Why Choose D22698172-108?
The landing gear is one of the most complex and critical systems on a transport-category aircraft. Its failure can be catastrophic. Using a genuine OEM D22698172-108 assembly is the only way to ensure you are installing a unit with a certified, traceable history, made from the correct materials, and subjected to the rigorous non-destructive testing (NDT) required by the manufacturer and airworthiness authorities. For a system this fundamental to the safety of the aircraft, its passengers, and crew, there is no substitute for a genuine OEM landing gear assembly.
Order Your D22698172-108 Nose Landing Gear Assembly Now
Ensure the safety and structural integrity of your aircraft with a genuine, fully certified OEM landing gear assembly. Visit Airparts.aero to inquire about new or serviceable D22698172-108 nose landing gear assemblies today.
The D22698172-108 oleo-pneumatic strut is an advanced energy dissipation device. Upon landing impact, the strut compresses rapidly. This action forces hydraulic fluid within the main chamber through a small, precisely sized orifice, providing powerful damping that converts the kinetic energy of the impact into heat. Simultaneously, this compression reduces the volume of the upper chamber, further compressing the high-pressure nitrogen gas. This compressed gas acts like a pneumatic spring, storing the energy and then gently re-extending the strut to its static height, preventing a harsh rebound. The entire assembly is a life-limited item whose service history must be meticulously tracked in the aircraft's permanent records.
Note: This is a flight-critical, serialized, and life-limited aircraft assembly. Installation, rigging, and servicing must be performed by certified A&P or AME mechanics holding the appropriate ratings and in strict accordance with the current ATR maintenance manual. All maintenance actions involving this assembly must be documented in the aircraft's permanent records.
