2-11SC1 - Textron Aviation OEM Static Discharger

2-11SC1 – Textron Aviation OEM Static Discharger

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Overview

The Textron Aviation 2-11SC1 is a genuine OEM, flight-critical static discharger, commonly known as a static wick. This component is an essential safety device installed on the trailing edges of wings, stabilizers, and control surfaces. Its primary function is to safely dissipate the precipitation static (P-static) electricity that accumulates on an aircraft's surface during flight. This buildup, caused by friction with airborne particles (rain, snow, dust), can reach extremely high voltages, causing severe radio interference (especially on HF and ADF frequencies) and, in extreme cases, posing a risk of electrical discharge that could damage sensitive avionics or even create a shock hazard.

The 2-11SC1 is engineered with a precisely calculated resistance value and a set of conductive points. This design facilitates a controlled corona discharge, allowing the static charge to bleed harmlessly off the airframe and into the surrounding atmosphere. As a genuine Textron part, it is manufactured to the exact specifications required for optimal performance and durability on their aircraft.

Key Features

• Genuine Textron Aviation OEM Part: Guarantees correct fit, electrical properties (resistance), and aerodynamic characteristics for Textron aircraft.

• Effective P-Static Dissipation: Safely discharges static electricity buildup, preventing radio interference and protecting sensitive avionics.

• Optimized Resistive Element: Features an internal resistive element designed to control the rate of discharge, maximizing effectiveness and minimizing noise generation.

• Durable Construction: Built with a rugged base, a weather-resistant housing, and durable conductive points designed to withstand the harsh aerodynamic forces and environmental exposure of flight.

• Flight-Critical Safety Component: Essential for maintaining clear radio communications and protecting aircraft systems from static discharge effects.

Technical Specifications

• Part Number: 2-11SC1

• Component Type: Static Discharger / Static Wick

• OEM Manufacturer: Textron Aviation (Cessna / Beechcraft)

• Resistance: Engineered to a specific resistance value (typically in the Megaohm range) per OEM specifications.

• Mounting: Typically secured with screws or rivets to the airframe trailing edge.

Aircraft Compatibility

• Textron Aviation: This static discharger is used across a wide range of Cessna and Beechcraft aircraft models where specified by the maintenance manual or IPC. This includes piston singles, twins, turboprops, and Citation jets.

Note: The correct static discharger part number and the required quantity/locations must be verified against the aircraft's specific Illustrated Parts Catalog (IPC) or maintenance manual.

Applications

• Precipitation Static (P-Static) Discharge: Provides the primary means of bleeding accumulated static charge off the airframe during flight through precipitation or dust.

• Radio Interference Reduction: Dramatically reduces the static noise heard on ADF, HF, and sometimes VHF communication and navigation radios, particularly during flight in precipitation.

• Avionics Protection: Helps protect sensitive electronic equipment from damage caused by high-voltage static discharges.

Why Choose 2-11SC1?

Static dischargers are critical safety components, not cosmetic additions. The Textron Aviation 2-11SC1 is the only part guaranteed to have the correct resistance value and aerodynamic shape specified by the manufacturer for their aircraft. Using a non-certified, "will-fit," or damaged static wick can be worse than having none at all. An incorrect resistance value can render the wick ineffective or even cause it to generate more radio noise. A physically damaged wick can create aerodynamic noise or even depart the aircraft in flight. For safe and interference-free radio communications, especially during IFR flight in precipitation, the genuine OEM 2-11SC1 is the only airworthy choice.

The engineering principle behind the 2-11SC1 static discharger is corona discharge. As an aircraft flies through precipitation or dust, frictional charging causes a large negative (or sometimes positive) electrical potential to build up on the airframe relative to the surrounding atmosphere. This potential can reach hundreds of thousands of volts. The static wick is designed with very sharp conductive points. According to the principles of electrostatics, electrical charge concentrates at sharp points. This high charge concentration ionizes the air molecules immediately surrounding the points. The ionized air becomes conductive, allowing the excess charge from the airframe to flow relatively quietly and harmlessly into the atmosphere as a low-current corona discharge. The internal resistor is critical; it limits the peak discharge current, preventing the generation of broadband radio frequency noise that would occur if the discharge were an uncontrolled, high-current arc.

Note: The 2-11SC1 is a flight-critical component. It must be installed by a certified A&P mechanic. The mounting base must have a clean, unpainted, electrically conductive bond to the airframe structure to be effective. The resistance value of the static wick should be checked periodically with a megohmmeter in accordance with the aircraft maintenance manual. Wicks that are physically damaged, excessively dirty, or show an incorrect resistance reading must be replaced.

Documentation

No public-facing OEM specification sheet was located for this specific part number. All authoritative technical data, installation procedures, and inspection criteria are contained within the official Textron Aviation Maintenance Manual and Illustrated Parts Catalog (IPC) for the applicable aircraft models.