COMMERCIAL AVIATION PRODUCTS

We are 4M Sigma Corporation located in Seattle, Washington, and in business for 23 years. We have supported commercial aircraft operations with design, manufacturing, calibration and repair solutions since 1992. This includes building proprietary electrical designs used both in the air and on the ground. We have flight hardware on aircraft as new as 737NGs and as old as MD-80s. Our operational support equipment and electrical/electronic, mechanical, hydraulic, and pneumatic test equipment, and specialty tooling interfaces with most Commercial Aircraft. These equipments are in use in 220 countries Worldwide at line stations, ramps, hangars, and backshops.

We build 4M Sigma-unique designs and airline-unique designs including:

Airframe cable assemblies
The most versatile, tarmac-ruggedized, and reliable Audio Communication Cables in the aerospace industry
Portable Data Loader Cable Assemblies and Extenders
Deicer Communications Power and Jumper Cords
Mobile Static Grounding Units
EMI-immune Cable Assemblies using filter-line wire, overbraid shielding and field-repairable EMI backshells
Avionics Rack Test Boxes (especially useful for "no-fault-found" troubleshooting)
Engine Test Pneumatic Adapters

We also build to customer-supplied prime and subtier drawings:

Electrical/Elecronic Test sets
Interface Test Adapters & Test Program Sets
Breakout boxes
Cable assemblies
Specialty Installation & Tooling Kits