MS25083-2BC3 - Textron Aviation OEM Wire Jumper Assembly

MS25083-2BC3 – Textron Aviation OEM Wire Jumper Assembly

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Overview

The MS25083-2BC3 is a military-standard electrical bonding jumper, a flight-critical component engineered to create a highly conductive, low-impedance electrical path between two points on an aircraft. This specific assembly is designed with an insulated, flexible, flat-woven braid and pre-terminated 45-degree bent lugs. Its primary role is to ensure electrical potential equalization for static electricity discharge, lightning protection, and EMI/RFI shielding, while the insulation provides an extra layer of protection against accidental shorting. As a certified MS-standard part specified by Textron Aviation, it guarantees the performance and reliability required for modern aircraft electrical systems.

Key Features

• Insulated for Safety: The "C" designation specifies that the tinned copper braid is encased in a durable insulating sleeve (typically silicone rubber or vinyl). This insulation prevents the jumper from inadvertently shorting against other wires, fluid lines, or structural components in confined spaces.
• Low-Impedance Braid: The core conductor is a flat, flexible braid made of finely stranded, woven tinned copper. This construction provides a large surface area, making it highly efficient at conducting high-frequency electrical energy (the "skin effect") from static discharge or EMI.
• 45-Degree Bent Lugs: The "-2" designation specifies that both ends are terminated with pre-installed lugs bent at a 45-degree angle. This orientation is specifically designed to facilitate installation on contoured surfaces or to provide proper clearance from surrounding structures.
• Vibration & Fatigue Resistance: The inherent flexibility of the braided strap allows it to withstand the constant, high-frequency vibrations of an aircraft without the work-hardening or fatigue failure that would occur with a solid conductor.
• MS Certified Standard: Manufactured in strict accordance with the MS25083 specification, guaranteeing its electrical conductivity, material quality, and dimensional tolerances are certified for airworthy applications.

Technical Specifications

• Standard: MS25083 (Jumper, Electrical Bonding and Grounding)
• Full Part Number: MS25083-2BC3
• Part Number Decoded:
  • -2: 45-Degree Bent Lug Terminals
  • B: Tinned Copper Braid
  • C: Insulated (Silicone/Vinyl Jacket)
  • -3: 3.0 inches Overall Length
    
• Braid Material: Tinned Copper
• Insulation Material: Silicone Rubber or Vinyl
• Terminal Configuration: 45-Degree Bent Lug on both ends.
• Overall Length: 3.0 inches
• Certification: FAA Production Approval

Aircraft Compatibility

The MS25083-2BC3 is a universal bonding jumper used across all types of modern aircraft, including those manufactured by Textron Aviation. Its application is determined by engineering requirements for a short, insulated, and angled connection.

• Common Applications:
  • Avionics & Instrument Racks: Providing a ground path for individual electronic units while the insulation protects against shorting other terminals in a dense rack.
  • Engine & Firewall Forward: Electrically bonding components like engine sensors, fluid lines, and heat shields where insulation provides extra protection from heat and accidental contact.
  • Flight Controls & Doors: Ensuring electrical continuity across hinges on flight control surfaces, landing gear doors, and access panels.
  • Composite Airframes: Essential for creating a continuous ground plane and lightning protection path across non-conductive composite structures.

Applications

This insulated jumper is essential for the electrical integrity and safety of the aircraft:

• Static Discharge: Provides a safe path for static electricity to dissipate, preventing interference with sensitive avionics.
• EMI/RFI Shielding: Helps create a "Faraday cage" effect by ensuring all metallic components of the airframe are at the same electrical potential, shielding systems from outside interference.
• Fault Current Return: Provides a low-resistance return path to ground, ensuring circuit breakers trip reliably in the event of a short circuit.

Why Choose MS25083-2BC3?

A missing, corroded, or improper bonding jumper can lead to a host of difficult-to-diagnose electrical problems, from noisy radios to complete system failures. The MS25083-2BC3 is an engineered solution that provides a certified, low-resistance electrical bond. The addition of the insulating jacket makes it the ideal choice for installations in complex, crowded areas where safety from accidental shorting is paramount. For an airworthy electrical installation, trust only certified Mil-Spec components.

Order Your MS25083-2BC3 Bonding Jumpers Now

Ensure the electrical integrity and safety of your aircraft with certified, insulated MS-standard components. Visit Airparts.aero to order your MS25083-2BC3 bonding jumpers today.

The MS25083-2BC3 bonding jumper's design addresses multiple requirements simultaneously. Its core function is to provide a low-impedance connection, which is achieved by the large surface area of the flat braid, mitigating the high-frequency "skin effect." The tinned copper material ensures excellent conductivity and prevents oxidation at the terminal crimp points. The key innovation of the "-2BC3" variant is the "C" designator for an insulated jacket. This feature is critical in modern aircraft where wiring, hydraulic lines, and control cables are often routed in dense, confined spaces. The insulation prevents the conductive braid from chafing against and shorting out an adjacent wire or creating a galvanic corrosion cell with a dissimilar metal fluid line.

Applicable Textron Aircraft

• 1900C Airliner
• 1900D Airliner
• Citation V, Ultra, Encore or Encore+
• King Air 350 or 350C FM-1 to FM-35
• King Air 360, 350i or 350C FM-36 & on
• King Air B200, B200T, B200C or B200CT
• King Air B200GT or B200CGT
• Premier Model 390

Applicable Bombardier Aircraft

• Learjet 55

List not comprehensive, may be applicable on other models.

Note: This is a flight-critical electrical component. Installation must be performed by a certified A&P mechanic or avionics technician. Mounting surfaces must be stripped of all paint and primer to ensure a bare metal-to-metal connection under the terminal lugs. The fasteners used to secure the lugs must be torqued to the value specified in the aircraft's maintenance manual to guarantee a low-resistance connection.