
3J Consulting, Inc.
Your Partner in Civil Engineering & Community Planning
Project: Sandy Vision and Comprehensive Plan
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Your Partner in Civil Engineering & Community Planning
Project: Sandy Vision and Comprehensive Plan

Scientific and engineering consulting services for aerospace, defense, and commercial applications.
Service detail: Systems Engineering
Providing responsive, innovative solutions in aviation, engineering, logistics, and program management services.
Service detail: Engineering Support

When Safety Is Critical.
Project: Applied Avionics DCU120 DAL A Certification Support
An Aerodynamics Legacy Since 1971
Project: Sino-Swearingen SJ30
We empower our people to do good and help others with simple solutions.
Service detail: Test & Evaluation

Improving Readiness Through Training
Project: Apache Gunnery Trainer (AGT) Delivery

Rapid Response. Proven Expertise. Global Reach.
Service detail: Aviation Engineering

Engineering solutions for unmanned and embedded systems
Service detail: Unmanned Systems Engineering

A Leader in Rotorcraft Simulation
Project: AVCATT Simulator Model Development

Bespoke flight simulation development and consulting
Project: XQ-58 Flight Simulation Development

Precision aerospace engineering, FAA certification, and inflight connectivity solutions.
Project: Piper M700 Fury RVSM Certification
Expert Counter-UAS Consulting Services
Service detail: Threat Assessment & Risk Analysis
Strength in design. Safety in flight.
Service detail: Aerospace Structural Engineering

Aircraft Modification, Certification & Engineering Services
Project: Supervan 900 Engine Conversion
Expert engineering consulting and investigation services for aircraft accident investigation and reconstruction.
Project: TWA Flight 800

High-Performance VTOL Aircraft & Launch Vehicles
Project: Aquilon VTOL Jet Interceptor
American Made. Warfighter Ready.
Service detail: Aerospace & Defense Manufacturing

Leading the pavement consulting industry
Service detail: Nondestructive Deflection Testing

Innovative Architectural and Engineering Solutions
Project: Henry E. Rohlsen International Airport (STX) - Terminal Improvements, Phase 1

Aeronautical Design, Defence R&D, and Industrial Automation
Project: Viking DHC-6 Series 400 Phase 2A Avionics Upgrade Certification
Forging Innovative Solutions for National Security
Service detail: Systems Engineering
Data-driven aerospace engineering modeling, simulation, and testing services.
Service detail: Modeling and Simulation

Aucoin & Associates, Inc. (A&A) is a civil, environmental, and transportation engineering and land surveying firm founded in Eunice, Louisiana in March 1951 by Lindsey J. Aucoin. Serving the Central Gulf Coast from offices in Eunice and Lake Charles, A&A provides professional engineering, planning, and surveying services across Louisiana, Texas, and Mississippi. Licensed engineers and surveyors hold credentials in Louisiana, Texas, Mississippi, and Arkansas. The practice serves municipal, state, and federal agencies, parish governments, and private clients including major oil and gas pipeline operators, with project work spanning coastal restoration, transportation infrastructure, municipal utilities, land development, and solid waste engineering.
Service detail: Civil Engineering