?unique=03e3ca7)
0500118-523 – Textron Aviation OEM Left Side Brake Line Assembly
Available now on the Airparts.aero Marketplace.
Textron approved spares part for legacy part number: 0500118-126
Overview
The Textron Aviation 0500118-523 is a flight-critical, OEM flexible brake line assembly for the left-hand main landing gear on specific Cessna high-performance single-engine aircraft. This assembly is the primary conduit for transmitting high-pressure hydraulic fluid from the rigid airframe plumbing to the brake caliper on the articulating landing gear strut. It is meticulously engineered to withstand the extreme dynamic stresses of landing, takeoff, and ground maneuvering, including flexing, vibration, and significant pressure fluctuations.
Constructed as a multi-layered hose, the 0500118-523 assembly features a specialized inner core compatible with aviation hydraulic fluids, reinforced with a braided stainless steel sheath for exceptional burst strength and abrasion resistance. The pre-formed, rigid tube sections and precision fittings at each end are designed for a perfect, leak-free interface with the master cylinder line and the brake caliper. The integrity of this brake line is paramount for the safe operation of the aircraft, directly affecting the pilot's ability to control the aircraft on the ground, reject a takeoff, and bring the aircraft to a safe stop after landing.
Key Features
OEM Certification: Genuine Textron Aviation part, guaranteeing exact fitment, material specification, and performance.
High-Pressure Capability: Designed to operate safely under the full pressure of the aircraft's hydraulic braking system.
Flexible and Rigid Construction: Combines a flexible hose section to absorb landing gear articulation with rigid, pre-bent tubing for precise routing and clearance.
Stainless Steel Reinforcement: Features a braided corrosion-resistant steel (CRES) outer layer for superior chafe protection and burst pressure resistance.
Leak-Proof Fittings: Equipped with factory-installed, high-quality fittings engineered for a secure, long-lasting seal.
Flight-Critical Component: Essential for ground control, braking performance, and overall operational safety.
Technical Specifications
Part Number: 0500118-523
Component Type: Left Hand Main Landing Gear Brake Line Assembly
OEM Manufacturer: Textron Aviation (Cessna)
Material (Hose): Polytetrafluoroethylene (PTFE) or similar synthetic rubber inner tube, braided CRES sheath.
Material (Tubing/Fittings): Corrosion-Resistant Steel (CRES), likely 304 or 321 alloy. Specific materials must be verified by OEM documentation.
Finish: Natural metal with protective chafe guards where specified.
Operating Fluid: Compatible with MIL-H-5606 or MIL-PRF-83282 aviation hydraulic fluids.
Governing Specifications: Manufactured to Textron Aviation proprietary specifications, meeting FAA airworthiness standards.
Aircraft Compatibility
Cessna (Textron Aviation): 210L Centurion, T210L Turbo Centurion, 210M Centurion, T210M Turbo Centurion, P210N Pressurized Centurion, T210N Turbo Centurion.
Note: This list is for reference only and may not be exhaustive. The aircraft's specific Illustrated Parts Catalog (IPC) is the final authority for determining part applicability and supersedure status.
Applications
Hydraulic Power Transmission: Delivers high-pressure hydraulic fluid from the airframe's rigid brake lines to the left main gear brake caliper.
Landing Gear Articulation: The flexible hose section accommodates the compression, extension, and steering movements of the landing gear strut without compromising hydraulic integrity.
Aircraft Braking System: A crucial component of the independent left-side hydraulic brake circuit.
Why Choose 0500118-523?
The aircraft's braking system is a no-fail system where component quality is non-negotiable. The OEM 0500118-523 assembly is manufactured and tested to withstand thousands of pressure cycles, extreme temperature variations, and constant vibration. Using non-certified, locally fabricated, or counterfeit brake lines introduces a severe risk of hose rupture or fitting failure, which can lead to a complete loss of braking on one side, resulting in a ground loop, runway excursion, or other catastrophic ground incident. Sourcing this genuine Textron Aviation part ensures compliance, safety, and the peace of mind that comes from using a component built to the aircraft's original design specifications.
The engineering design of the 0500118-523 brake line is a study in material science and fluid dynamics under adverse conditions. The choice of a braided stainless steel (CRES) sheath over the elastomeric inner core is critical. This braid acts as a hydrostatic reinforcement, preventing the hose from expanding radially under pressure. According to Pascal's Principle, the pressure exerted by the hydraulic fluid is transmitted equally throughout the system; any volumetric expansion of the hose would dissipate this energy, resulting in a "spongy" brake feel and reduced braking force at the caliper. The CRES braid, with its high tensile strength and modulus of elasticity, constrains this expansion, ensuring that nearly all of the force applied at the master cylinder is converted into clamping force at the brake disc. Furthermore, the braid's interwoven construction provides exceptional resistance to torsional stress and external abrasion, a vital characteristic for a component located in the harsh, debris-rich environment of the landing gear assembly.
Note: The 0500118-523 is a flight-critical safety component. Installation must be performed by a certified A&P mechanic in strict accordance with the current Textron Aviation maintenance manual for the specific aircraft model. All fittings must be torqued to the specified values, and the system must be properly bled of air and leak-checked prior to return to service. Brake hoses are condition and/or life-limited items and must be inspected and replaced as required by the maintenance schedule.
Documentation
No public-facing OEM or regulatory specification sheet was located for this part number. All technical data, installation procedures, inspection criteria, and torque specifications are contained within the official Textron Aviation Model 210 Series Service Manual and Illustrated Parts Catalog (IPC).
