Successful missions depend on aircraft platforms that use reliable, long-lasting MIL-STD-1760 umbilicals. But, our customers have told us that they often have to replace standard umbilicals using screw-on lanyard, quick-release connectors. Why? Because they’re stiff, hard to handle and don’t withstand pylon installation or operation. Maintenance is time-consuming and costly because it involves removing many aircraft components to replace the damaged umbilicals with new ones.

Gore offers the only sealed hybrid solution proven over time to solve all these problems - an affordable, easy-to-install umbilical with a connector system that doesn't fail when installed or during operation.


GORE MIL-STD-1760 Assemblies with the L3Harris, Field Replacement Connector System™ (FRCS™) are the only solution proven to guarantee safe operations with a low bend force over wide temperatures. They’re also proven to protect against electromagnetic interference (EMI) with at least 85% optical coverage. Not only that, our MIL-STD-1760 shielding assemblies have a life beyond 100,000 flexes in harsh aerospace conditions without ever failing to do their job.

We thoroughly test and qualify our assemblies according to the MIL-STD-1760 specification, MIL-STD-810 and other standards. They’re certified for more than 100 ejected releases and 400 manual disconnects. For over 25 years, our assemblies have delivered 100% successful store releases on many defense airborne platforms.


Robust and highly flexible, our assemblies can be easily installed in limited spaces of aircraft pylons. They’re available in a variety of wire types with a smaller cross-sectional diameter compared to standard umbilicals. They can be easily attached and removed from ASI (Aircraft Store Interface) and MSI (Mission Store Interface) while operating in an NBC (Nuclear Biological Chemical) environment. Our assemblies reduce maintenance, downtime and product lifecycle costs because they don’t have to be replaced after each use.

Construction of GORE® MIL-STD-1760 Assemblies, Class 1 (FO) Version for Defense Aircraft.

Robust, highly flexible layout of GORE MIL-STD-1760 Assemblies, Class 1 (FO) Version


We worked with L3Harris to compare the performance of our MIL-STD-1760 cable assembly with their FRCS™ against standard umbilicals that use screw-on MIL-STD-38999/31 lanyard connectors. We configured a simulator on stores with racks adjusted to represent various pylon stations accurately, including retention methods. Then, we captured the data to validate umbilical connector loads and store velocity during ejected pit releases.

Our results showed that 1 out of 10 new standard umbilicals separated within the specification limit after 100 drops. Also, 50% of the umbilicals were unserviceable after only 3 drops, and 25% failed to disconnect at all and ended up in the pit. But, our assemblies with the MIL-STD-1760 connector pinout from L3Harris delivered consistent disconnect loads and can guarantee 100 fully high-speed instrumental drops.

Field Replacement Connector System and FRCS are trademarks of L3Harris Release & Integrated Solutions Ltd., in the U.S.

Program Heritage


After being introduced to the North Atlantic Treaty Organization (NATO) in the 1990s, GORE MIL-STD-1760 Assemblies have delivered 100% successful store releases on many airborne platforms, including:

  • A-10 Warthog
  • B-1B, B-2
  • F-15E, F-16, F-35
  • Gripen, GR9
  • S-3B Viking
  • Super Lynx, Wildcat
  • Tornado GR4
  • Typhoon

Have an aircraft pylon requiring certified assemblies with consistent disconnect loads? Let’s talk about how Gore can help!

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Features & Benefits

GORE MIL-STD-1760 Assemblies are engineered with unique features that make them more durable in challenging aircraft environments, including:

  • sealed hybrid assembly in a highly flexible design
  • chemically inert, temperature-resistant, EMI shielding materials
  • a variety of wire types with smaller cross-sectional diameters
  • Class I & II standard versions or customized options

Our aircraft umbilical cable assembly provides system architects and engineers with many benefits that improve electrical, mechanical and environmental performance such as:

  • guaranteed 100 ejected releases
  • superior EMI protection with at least 85% optical coverage
  • excellent electrical and mechanical performance in extreme conditions
  • easy installation and extended operation from proven high flex life >100,000
  • fully tested, qualified and certified for 500 manual disconnects
  • less maintenance, downtime and replacement costs
  • a variety of connectors (standard shell size 25, 17, 15 stores with relevant inserts)
  • flight-proven on many airborne platforms with 100% successful store releases

Are you wondering if your aircraft pylon could benefit from our proven cable assemblies?

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Technical Specs

These values demonstrate the mechanical and environmental performance of GORE MIL-STD-1760 Assemblies for Defense Aircraft.

Mechanical / Environmental Property GSC-01-86039-00
Class I (FO)
Class I
Class II
Outer Jacket Material Halogen-Free Elastomer Halogen-Free Elastomer Halogen-Free Elastomer
Outer Jacket Color1 Black Black Black
Conductor Plating2 Silver-Plated Copper Silver-Plated Copper Silver-Plated Copper
Conductor Color-Coding Individually Coded Primaries Individually Coded Primaries Individually Coded Primaries
Dielectric Material PTFE/Expanded PTFE PTFE/Expanded PTFE PTFE/Expanded PTFE
Braid Shielding2 Silver-Plated Copper Silver-Plated Copper Silver-Plated Copper
Braid Optical Coverage3 % > 85 > 85 > 85
Outer Diameter mm (in) 18.7 (0.74) 18.7 (0.74) 18.3 (0.72)
Fiber Optic Core Type2 OM3 (Multi-Mode, Graded Index)
Fiber Optic Core/Cladding/Coating 50/125/245
Fiber Optic Buffering System Expanded PTFE 900 micron
Minimum Bend Radius
mm (in)
46.8 (1.8)
93.5 (3.7)
46.8 (1.8)
93.5 (3.7)
45.8 (1.8)
91.5 (3.6)
Flex Life Cycles > 100,000 > 100,000 > 100,000
Temperature Range °C -60 to +150 -60 to +150 -60 to +150


1 Other colors available upon request.
2 Other options available upon request.
3 Other optical coverages available upon request.

How to Buy

Flight-proven on many airborne platforms with 100% successful store releases since the 1990s, we offer Class I & II standard MIL-STD-1760 breakout cable assembly versions in a variety of wire types. We also offer customized assembly options to meet your defense aircraft integration requirements. For more information or to discuss your specific application needs and place an order, contact a Gore representative today.

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Aktuellste News


The European Aviation Network Selects GORE® Microwave Sealed Airframe Assemblies for Durable and Reliable Signal Performance

Veröffentlicht: Mai 6, 2017

Gore is pleased to announce that starting this summer, GORE® Microwave Sealed Airframe Assemblies will be used to improve Wi-Fi internet access on European short-haul flights.

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