Personal Attention. Proven Experience. Real Value.

Founded in 1981, Turbines Inc. has become a trusted leader in the major repair and overhaul of the Pratt & Whitney PT6A engine. For more than four decades, we have served every segment of the market, from agricultural aircraft to airlines, and everything in between.

What sets us apart is simple. When you call Turbines, you get experience. Not a call center. Not a message slip. Experience.

Direct Access to Expertise

PT6A operators do not have time to wait.

We are available 24 hours a day, seven days a week for troubleshooting, operational questions, and real-world advice. When you call, you speak directly to Dustin Wineinger, General Manager, who brings hands-on PT6A experience. He has the authority and technical depth to mobilize our full resources immediately to solve your engine challenges.

No gatekeepers. No delays. Just knowledgeable answers when you need them most.

Call us anytime at 812-877-2587.

Thrush / Air tractor with a PT6 engine. PT6A-34AG PT6A-60AG

Complete In-House Capability

Turbines Inc. is FAA-approved to perform all PT6A work scopes, from Hot Section inspections to full Overhaul across all PT6A models. Yes, we are recognized experts on the PT6A-20.

All cleaning, NDT, inspection, balancing, assembly, and testing are performed in-house at our Terre Haute facility. Keeping every major step under one roof allows us to control quality, reduce delays, and deliver one of the industry's fastest turn times.

Our certified propeller test cell ensures engines leave our shop verified, tested, and ready to perform.

Centrally Located. Fly-In Ready.

We are centrally located in Terre Haute, Indiana, on the grounds of the Terre Haute International Airport. With full fly-in access directly to our hangar and a 24-hour manned control tower, access to Turbines Inc. is straightforward and efficient.

Solutions That Make Sense

We understand that your hard-earned dollar demands reliability. Downtime costs money. Whether you need a Hot Section, major repair, overhaul, or a PT6A-28 to PT6A-34 conversion, we deliver thoughtful solutions designed around performance, cost control, and operational continuity.

Every engine in our shop receives detailed attention and disciplined workmanship to ensure safety, quality, and a turnaround time that exceeds expectations.

When It Has to Work

The PT6A was built to work. So are we. If you are facing an engine issue, planning an overhaul, or exploring a conversion, give us a call. We are ready to help.

A man with tattoos on his arm, wearing a blue checkered shirt, is inspecting machinery or equipment on a workbench.

Built on the Demands of Agriculture

The PT6A engine was designed to work. So were we.

Our business was forged in the demanding agricultural aviation market, where spray windows are tight and downtime is costly. That environment shaped our standards for speed, reliability, and precision. The efficiencies we developed serving ag operators now benefit our corporate, private, charter, and airline customers with faster turn times and lower maintenance costs.

Many engines leaving our facility operate beyond 8,000 hours without significant repairs. That kind of longevity is not accidental. It is the result of disciplined processes and meticulous craftsmanship.

An aircraft cockpit with the fuselage open, revealing internal components and wiring, inside a hangar with a metal roof and some tools and cloths on the ground.
Terre Haute Indiana airport. Human Field KHUF
Terre Haute Indiana airport. Human Field KHUF