S1938-3-68.00 – Textron Aviation OEM Boot
Available now on the Airparts.aero Marketplace.
Overview
The Textron Aviation S1938-3-68.00 is a genuine OEM boot assembly, a flight-critical protective component specifically engineered for the nose landing gear shock strut of the Cessna Citation 560 series of business jets. This flexible boot, often referred to as a "gaiter," acts as a crucial shield, protecting the highly polished chrome surface of the shock strut's inner piston from damage. Manufactured from a durable, high-specification elastomer, the S1938-3-68.00 is designed to endure the harsh operating environment of the landing gear, ensuring the long-term integrity and reliability of the nose gear strut.
Key Features
- Piston & Seal Protection: Its primary function is to protect the exposed, mirror-finish chrome piston of the oleo strut from nicks, scratches, and pitting caused by runway debris, rocks, and airborne particulates. Damage to the chrome surface is the leading cause of hydraulic seal failure and strut leaks.
- Durable Elastomeric Construction: Fabricated from a high-strength, flexible synthetic rubber compound. This material is specifically formulated to resist damage from hydraulic fluids (MIL-H-5606, Skydrol), ozone, UV radiation, and extreme temperature changes.
- Flexible Bellows Design: The convoluted, bellows-like design allows the boot to compress and extend smoothly as the shock strut articulates during takeoff, landing, and taxiing, providing continuous protection throughout the gear's range of travel.
- Contaminant Barrier: Acts as a barrier to prevent the accumulation of dirt, mud, and ice on the strut piston, which could otherwise be drawn past the seals and into the hydraulic fluid, causing internal damage.
- Genuine Textron OEM Part: As a genuine factory component, it guarantees the correct material composition, durometer (hardness), and dimensional fit specified by Textron's engineers for the Citation 560 series, ensuring an airworthy and effective installation.
Technical Specifications
- Part Number: S1938-3-68.00
- Component Type: Nose Landing Gear Shock Strut Protective Boot
- Material: High-Strength, Fluid-Resistant Synthetic Rubber (Elastomer)
- Installation: Secured at the top and bottom of the shock strut with clamps.
- Primary Function: Shields the chrome piston of the oleo-pneumatic strut.
- Certification: FAA Production Approval
Aircraft Compatibility
The S1938-3-68.00 is the specific OEM protective boot for the nose landing gear on the highly successful Cessna Citation 560 family of mid-size business jets.
- Primary Aircraft Models:
- Cessna Citation V (560)
- Cessna Citation Ultra
- Cessna Citation Encore
- Cessna Citation Excel
Applications
The S1938-3-68.00 is an essential part of the landing gear assembly:
- Landing Gear Protection: Provides continuous protection to the most sensitive part of the shock strut, preventing the damage that leads to costly fluid leaks and strut overhauls.
- Scheduled Maintenance: A critical inspection item during all landing gear inspections. It must be replaced if found to be cracked, perforated, or have lost its flexibility due to age or fluid contamination.
Why Choose S1938-3-68.00?
The cost of overhauling a leaking nose gear strut on a business jet is substantial, and the primary cause of such leaks is damage to the chrome piston surface. The S1938-3-68.00 boot is an inexpensive yet vital component that directly protects this high-value assembly. Using a genuine Textron Aviation OEM boot ensures that the part is made from the correct, durable material that will not degrade prematurely and will provide a perfect fit, offering the best possible protection. For maintaining the health and reliability of your landing gear, there is no substitute for certified OEM parts.
Order Your S1938-3-68.00 Boot Assembly Now
Protect your aircraft's valuable landing gear from damage with a genuine Textron Aviation OEM component. Visit Airparts.aero to order your S1938-3-68.00 nose gear strut boot today.
The S1938-3-68.00 serves as a dynamic environmental shield for the oleo-pneumatic strut's piston. The piston's hard chrome plating provides a very low-friction surface for the hydraulic seals to slide against. However, this surface is susceptible to impact damage. A single rock chip can create a microscopic raised burr on the chrome. As the strut compresses, this burr acts like a knife, slicing the delicate lip of the hydraulic seal. The S1938-3-68.00 boot is designed to completely enclose this critical surface, absorbing the energy of small impacts and preventing debris from ever reaching the piston. Maintaining the integrity of this boot is one of the most effective preventative maintenance actions to ensure a long, leak-free service life for the entire nose gear strut assembly.
Note: This is a flight-critical landing gear component. Installation should be performed by a certified A&P mechanic with experience on Citation landing gear systems, in accordance with the current Textron Aviation maintenance manual. Proper installation often requires the removal of the nose wheel and axle and securing the boot with specified clamps.
