S1363-2 - Textron Aviation OEM Rudder Pedal Torque Tube Shaft

S1363-2 – Textron Aviation Rudder Pedal Torque Tube Shaft

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The S1363-2 is a genuine Textron Aviation (Cessna) OEM, flight-critical rudder pedal torque tube shaft. This precision-machined component serves as the primary structural member of the rudder pedal assembly, supporting both the pilot's and co-pilot's rudder and brake pedals. Its essential function is to act as a torque tube, transmitting the pilot's rudder inputs from the pedals to the rudder control cables and bellcranks, providing directional control of the aircraft.

Fabricated from a high-strength, aerospace-grade aluminum alloy, the S1363-2 is engineered to provide the required torsional stiffness with minimal weight. Its dimensions are precisely controlled to ensure a slop-free, responsive feel in the flight controls. As a core component of a primary flight control system, its structural integrity is non-negotiable. Wear or corrosion on this shaft can lead to reduced control effectiveness or, in a worst-case scenario, a loss of rudder control.

Key Features

• Genuine Textron Aviation OEM Part: Guarantees the correct material, heat treatment, dimensions, and corrosion protection as specified in the aircraft's original type design.

• Transmits Primary Flight Control Inputs: A flight-critical component that translates pilot pedal movements into rudder deflection.

• High-Strength Aluminum Alloy Construction: Typically manufactured from a high-strength, heat-treated aluminum alloy tube (e.g., 7075-T6) for an optimal stiffness-to-weight ratio.

• Precision-Machined for Slop-Free Operation: The diameters for the support bearings and pedal clamps are machined to exacting tolerances to minimize free play in the rudder control system.

• Anodized for Corrosion and Wear Resistance: Features a protective anodized coating per military specification to prevent corrosion and provide a hard, wear-resistant surface for the pivoting pedal assemblies.

Technical Specifications

• Part Number: S1363-2

• Component Type: Rudder Pedal Torque Tube Shaft

• OEM Manufacturer: Textron Aviation (Cessna)

• Material: High-Strength Aluminum Alloy (e.g., 7075-T6).

• Finish: Anodized per MIL-A-8625 or equivalent specification.

• Features: May include pre-installed bushings depending on the specific assembly revision (must be verified by IPC).

Aircraft Compatibility

The S1363-2 is the specified rudder pedal torque tube for a vast range of Textron Aviation (Cessna) single-engine aircraft. Common applicable models include, but are not limited to:

• Cessna 150, 152

• Cessna 172 Skyhawk (many models)

• Cessna 177 Cardinal

• Cessna 180, 182 Skylane, 185 Skywagon

• Cessna 206 Stationair, 207 Skywagon, 210 Centurion

Crucial Note: The specific aircraft model and serial number must be checked against the latest revision of the official Textron Aviation (Cessna) Illustrated Parts Catalog (IPC) to ensure correct part number applicability.

Applications

• Primary pivot shaft for the pilot and co-pilot rudder and brake pedal assemblies located under the instrument panel.

• Replacement part for torque tubes that are worn at the bearing points, corroded, cracked, or damaged.

Why Choose S1363-2?

Choosing the genuine Textron S1363-2 is an essential decision for flight safety. The rudder is a primary flight control, and the integrity of every component in that system is critical. A non-genuine part may be made from an incorrect alloy or lack the proper heat treatment, making it susceptible to failure under the repeated stresses of flight. A failure of the rudder pedal torque tube would result in a loss of directional control. The genuine OEM part from Textron Aviation is the only way to guarantee the certified materials, manufacturing processes, and quality control required for a safe and airworthy flight control system.

The S1363-2 is an example of an optimized structural member known as a torque tube. It is designed to maximize its torsional stiffness-to-weight ratio, a critical consideration in airframe design. The torsional stiffness of a shaft is proportional to its polar moment of inertia (J) and the material's shear modulus (G). For a hollow circular tube, the polar moment of inertia is a function of the difference between the fourth powers of the outer and inner radii (J∝(router4​−rinner4​)). This mathematical relationship demonstrates that most of the torsional stress is carried by the material at the outermost diameter of the shaft. By engineering the S1363-2 as a thin-walled tube made from a high-strength aluminum alloy like 7075-T6, designers achieve the required stiffness to transmit rudder inputs precisely and without excessive angular deflection ("wind-up"), while keeping the component's weight to an absolute minimum. This is a far more efficient design than a solid bar, which would be significantly heavier for the same level of torsional rigidity.

Note: This is a flight-critical primary flight control component. Installation is a complex task that requires the removal and re-rigging of the rudder and brake systems. This work must be performed by a certified A&P mechanic in strict accordance with the Textron/Cessna maintenance manual for the specific aircraft model. All associated bearings, bushings, and hardware should be meticulously inspected for wear and replaced as necessary during installation.

Documentation

The definitive part number applicability and all installation and rigging procedures are detailed in the applicable Textron Aviation (Cessna) Illustrated Parts Catalog (IPC) and Maintenance Manual for the specific aircraft model and serial number.