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Whole-aircraft capability, under one roof.

From the first line on the drawing board to a certified aircraft on the ramp, SAI can plan and perform every critical engineering discipline in-house — the model of a focused Skunk Works applied to heavy aircraft.

01 — Engineering

Design & Systems Integration

Original aircraft design, structural and aerodynamic analysis, and full systems integration. Our engineers carry a "whole-aircraft" understanding — every change is evaluated against the complete platform, not in isolation.

02 — Airframe

Heavy Structural Modification

Major airframe rework, fuselage and wing modification, and structural life extension that returns proven airframes to decades of additional certified service.

03 — Aerodynamics

Aerodynamic & STOL Performance

High-lift devices, wing and control-surface refinement, and configuration work that expand short-field performance, range, and payload.

04 — Propulsion

Re-Engine & Propeller Upgrade

Modern engines and next-generation propellers integrated with new generators and control systems for greater power, efficiency, and dispatch reliability.

05 — Avionics

Glass-Cockpit Modernization

Replacement of legacy analog flight stations with modern, two-crew glass cockpits — improving situational awareness, safety, and crew workload.

06 — Prototyping

Prototyping & Flight Test

Rapid prototyping and company flight-test aircraft let us prove modifications in the air before they reach a customer's fleet.

SAI engineers testing a C-130 STOL Herk scale model in a wind tunnelSTOL Herk · Wind-Tunnel Validation
Engineering Discipline

Proven on the model
before it flies.

SAI's STOL configurations are validated in the wind tunnel before a single part is cut. Aerodynamic data drives the design — so the performance we promise on paper is the performance the aircraft delivers in the air.

  • Scale-model aerodynamic testing and data correlation
  • Configuration refinement ahead of flight test
  • Design decisions backed by measured results
From Analog to Glass

We modernize
what already works.

The C-130 is among the most capable airlifters ever built. What dates it isn't the airframe — it's the systems. SAI rebuilds the cockpit, propulsion, and structure around the platform operators already trust.

A new C-130J runs well over $97 million per aircraft. SAI delivers comparable capability — range, payload, avionics, and decades of added service life — by modernizing the proven airframes operators already own, at a fraction of the cost.

  • Reduced crew workload and a smaller flight crew
  • Modern navigation, communication, and surveillance compliance
  • Lower operating cost and improved dispatch reliability
  • Decades of additional certified airframe life
A legacy C-130 analog cockpit — the starting point for SAI modernizationBaseline analog flight station
Certification

Engineering means nothing
until it's certified.

Certification is where many modification programs stall. It's where SAI is strongest. SAI's founding engineer personally managed more than 35 FAA certifications across a variety of aircraft — so a modification doesn't just work on paper, it flies, and it's approved to carry the mission.

FAA-Certified Modifications

A portfolio the primes
would have to build from scratch.

SAI's C-130 modifications aren't concepts — they're backed by FAA Supplemental Type Certificates. That certified pedigree is the difference between a slide and an aircraft cleared to fly the mission.

STC ST396CH

Electrical System

The flagship certificate — a re-architected C-130 electrical power generation, control, and distribution system. FAA-certified under type certificate TQ3CH.

Propulsion

NP-2000 Propellers

Eight-blade composite propellers integrated on the C-130 for greater thrust, lower vibration, and simplified maintenance over the legacy four-blade system.

Aerodynamics

Wing Tip Tanks

SAI's non-drag-inducing wing tip tank — roughly 512 gallons per side of additional fuel — extending range without the drag penalty of conventional external tanks.

Avionics

Glass Cockpit / EICAS

A modern two-crew glass flight deck with engine-indication and crew-alerting systems, replacing the legacy analog instrument panel.

Landing System

Carbon Brakes

Lighter, longer-life carbon brakes that improve stopping performance and reduce maintenance burden on demanding, short-field operations.

Performance

STOL Package

An integrated short take-off and landing configuration — high-lift aerodynamics and propulsion working together to reach fields the standard aircraft can't.

Modification Suite

More ways to extend
the airframe.

Beyond the flagship certified mods, SAI has engineered a deep catalog of C-130 and L-100 upgrades — selected and combined to fit each operator's mission.

Propulsion

T56-A-15 Re-Engine

The T56-A-15, Series 3.5 upgrade gives older C-130B/E/H operators more power, capability, and dispatch reliability from the engines they already understand.

Structures

Nacelle & Engine Mounts

Redesigned forward and aft nacelle and engine-mount structures cut load concentration at the wing front spar by roughly 50%.

Electrical

Dual-Battery Installation

A flight-tested dual-battery system that meets FAA and U.S. military emergency-power and service-time requirements in the event of a generation failure.

Ground Power

GTC / ATM System

Gas-turbine-compressor and air-turbine-motor upgrades for reliable on-ground electrical power without running the aircraft's main engines.

Airframe

Fuselage Stretch

A C-130E/H and L-100 fuselage stretch that increases cargo volume for operators who need more cubic payload from the same platform.

Protection

Lightning Protection

A redesigned lightning dissipation and protection system that hardens the modernized aircraft against strike damage.

Let's Talk

Bring us the requirement.

Range, payload, avionics, service life — tell us the gap, and we'll scope the engineering to close it.

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