---
title: "Aircraft Component MRO | ECS Repair & Overhaul | Qualified Technologies"
description: "FAA & EASA certified aircraft component repair and overhaul. ECS specialists: heat exchangers, air cycle machines, pneumatic valves, sensors. Upland, CA. Request a quote."
url: https://qtc.aero/
---

FAA & EASA Certified Repair Station

# Aircraft Component MRO with Engineered Solutions and Fast Turnaround

[Request A Quote](https://qtc.aero/pending-quote/) · [Search By Part](https://qtc.aero/capabilities/)

Parts Catalog

## Search 597+ Aircraft Components

Environmental Control System components, hydraulics, air cycle machines, and more — across hundreds of aircraft makes and models. Find your part and request a quote.

(Online form: fill it out at https://qtc.aero/)

Jump to: [Heat Exchangers 91](https://qtc.aero/capabilities/?nomen=Heat%20Exchanger) · [Oil Coolers 27](https://qtc.aero/capabilities/?nomen=Oil%20Cooler) · [Overtemp Switches 27](https://qtc.aero/capabilities/?nomen=Overtemperature%20Switch) · [Cooling Turbines 16](https://qtc.aero/capabilities/?nomen=Cooling%20Turbine) · [Air Cycle Machines 5](https://qtc.aero/capabilities/?nomen=Air%20Cycle%20Machine) · [All 597 parts →](https://qtc.aero/capabilities/)

Company Services

## Environmental Control System
Component Repairs

[Heat Transfer Equipment](https://qtc.aero/capabilities/heat-exchangers/): Heat Exchangers, Pre-Coolers, Oil Coolers, Reheater/Condenser

[Air Management Systems](https://qtc.aero/capabilities/pneumatic-valves/): Butterfly, Check, Modulating, Pressure Regulating and Shut-off, Bleed Air Regulating, and De-ice

[Temperature Sensing Devices](https://qtc.aero/capabilities/temperature-sensors/): Cabin Temperature and Engine Accessory Switches and Sensors

[Differential Pressure Switches](https://qtc.aero/capabilities/differential-pressure-switches/): Oil, Fuel, Hydraulic

[Air Cycle Machines](https://qtc.aero/capabilities/air-cycle-machines/): Compression, Cooling, Expansion

[Hydraulics](https://qtc.aero/capabilities/hydraulic-components/): Hydraulics

[View All Services](https://qtc.aero/services/)

The QTC Advantage

## Why Airlines and Operators Choose QTC

### Reduced Process Times

Engineering-driven workflows cut component turn times without sacrificing quality.

### Reduced Repair Costs

OEM engineering expertise means we repair rather than replace wherever possible.

### Electronic Status Updates

Automated notifications keep your team informed at every stage of the repair process.

### Predictable Fixed Pricing

Clear upfront quotes — no surprise invoices at return.

### Engineered System Repairs

Customized engineering solutions by aerospace engineering experts with OEM backgrounds.

Capabilities

## Serving Customers Worldwide

QTC's capabilities span the full breadth of aircraft ECS components — from heat exchangers and air cycle machines to hydraulic pumps. Our 597-part catalog reflects 25+ years of hands-on repair depth.

[ECS-HX Heat Exchangers 121 parts](https://qtc.aero/capabilities/heat-exchangers/) · [ECS-ACM Air Cycle Machines 40 parts](https://qtc.aero/capabilities/air-cycle-machines/) · [ECS-AMS Air Management Systems 161 parts](https://qtc.aero/capabilities/pneumatic-valves/) · [ECS-TSV Temperature Sensing 63 parts](https://qtc.aero/capabilities/temperature-sensors/) · [ECS-DPS Differential Pressure 27 parts](https://qtc.aero/capabilities/differential-pressure-switches/) · [HYD-PMP Hydraulics 29 parts](https://qtc.aero/capabilities/hydraulic-components/)

[View Full Capabilities →](https://qtc.aero/capabilities/)

![787 Heat Exchanger component — QTC repair and overhaul](https://qtc.aero/_astro/capability-htex.C0xFK9Ni_ZFDUxl.webp)

![The Qualified Technologies Corporation team at our Upland, California facility](https://qtc.aero/_astro/team-group.DXZBLbfu_Z4pXwk.webp)

Our Story

## Our Commitment

Qualified Technologies is committed to serving airlines in need of effective and reliable customer support to facilitate a mutually beneficial, long-term relationship.

The founders of QTC are veterans of the aircraft components maintenance and repair industry with over 100 years of cumulative experience. The founders of Qualified Technologies Corporation are former aerospace OEM engineers from Hamilton Sundstrand and Honeywell.

We are conveniently located about 50 miles east of Los Angeles, next to the Upland Cable Airport and UPS and FedEx distribution facilities.

FAA Certified EASA Approved CAA UK 25+ Years

[Learn More About QTC](https://qtc.aero/about/)

What Our Customers Say

## Trusted by Airlines and Operators

> It’s been a long time since I’ve worked with such a knowledgeable, professional group of people, and seen such a clean operation.

— FAA PMI

> QTC is starting off on a good note by buying exchange units and providing notification etc. Whatever makes the expeditor’s job easier is always a plus.

> If you DON’T hear from us you are doing everything right. Meeting schedules and the communication from QTC is a welcome change in our vendors.

> QTC is a great example of a responsive vendor using a responsible carrier for an appreciative customer…and the automated communication between all was impressive.

Gallery

## From Our Facility

[View Full Gallery →](https://qtc.aero/gallery/)

[![Two QTC technicians overhauling aircraft components at the workbench](https://qtc.aero/_astro/05.DV8RFizE_1pgrGy.webp)](https://qtc.aero/gallery/) · [![QTC repair-station facility at 2133 Aviation Drive, Upland, California](https://qtc.aero/_astro/15.Dv5Y_a5v_Z1UpMLe.webp)](https://qtc.aero/gallery/) · [![QTC technician inspecting an aircraft heat exchanger](https://qtc.aero/_astro/17.4pVFOg07_ZNsajJ.webp)](https://qtc.aero/gallery/) · [![QTC technicians servicing a pneumatic valve assembly](https://qtc.aero/_astro/18.BT_wYA7O_Zpf5LF.webp)](https://qtc.aero/gallery/) · [![QTC team member on the shop floor](https://qtc.aero/_astro/16.C5z_pMER_Zv3SiS.webp)](https://qtc.aero/gallery/) · [![QTC technician running an ECS component on the test bench](https://qtc.aero/_astro/02.BH9xo7BF_Z1SArGC.webp)](https://qtc.aero/gallery/) · [![Component cleaning and inspection at QTC](https://qtc.aero/_astro/19.heOBhjsz_ZQFdvm.webp)](https://qtc.aero/gallery/) · [![QTC technician testing a cooling turbine](https://qtc.aero/_astro/20.DCM0OacB_1igFA1.webp)](https://qtc.aero/gallery/) · [![QTC technician at a repair workbench](https://qtc.aero/_astro/06.CDvEE_w1_Z1ojy9D.webp)](https://qtc.aero/gallery/) · [![Close-up of precision component repair at QTC](https://qtc.aero/_astro/21.DuMbKDbz_1kyl8E.webp)](https://qtc.aero/gallery/) · [![Disassembled air cycle machine components during overhaul](https://qtc.aero/_astro/22.Cy6o5r55_h2qQP.webp)](https://qtc.aero/gallery/) · [![QTC test and cleaning equipment on the shop floor](https://qtc.aero/_astro/04.BatSs4PX_ZmAB3f.webp)](https://qtc.aero/gallery/) · [![Overhauled air cycle machine assembly on a test stand](https://qtc.aero/_astro/23.DGY8myW8_1xlIPQ.webp)](https://qtc.aero/gallery/) · [![Refurbished aircraft component at QTC](https://qtc.aero/_astro/03.C19tROz9_17PBBx.webp)](https://qtc.aero/gallery/) · [![Air cycle machine turbine during overhaul at QTC](https://qtc.aero/_astro/24.Dw1w9_xc_Z2msRsP.webp)](https://qtc.aero/gallery/) · [![Overhauled ECS components ready for return at QTC](https://qtc.aero/_astro/01.8wQWiGwq_1UjvI4.webp)](https://qtc.aero/gallery/)

Ready to Get Started?

## Need repair, overhaul, or part support?

QTC's engineering-backed team is ready to turn around your aircraft components with speed, transparency, and fixed pricing.

[Request A Quote](https://qtc.aero/pending-quote/) · [Search By Part](https://qtc.aero/capabilities/)

Aircraft We Service

## Component repair across the platforms you fly

- [![Bombardier logo](https://qtc.aero/images/aircraft-logos/bombardier.png)](https://qtc.aero/aircraft/bombardier/)
- [![Boeing logo](https://qtc.aero/images/aircraft-logos/boeing.png)](https://qtc.aero/aircraft/boeing/)
- [![Beech logo](https://qtc.aero/images/aircraft-logos/beech.png)](https://qtc.aero/aircraft/beech/)
- [![Dornier logo](https://qtc.aero/images/aircraft-logos/dornier.png)](https://qtc.aero/aircraft/dornier/)
- [![Cessna logo](https://qtc.aero/images/aircraft-logos/cessna.png)](https://qtc.aero/aircraft/cessna/)
- [![Embraer logo](https://qtc.aero/images/aircraft-logos/embraer.png)](https://qtc.aero/aircraft/embraer/)
- [![Gulfstream logo](https://qtc.aero/images/aircraft-logos/gulfstream.png)](https://qtc.aero/aircraft/gulfstream/)
- [![Airbus logo](https://qtc.aero/images/aircraft-logos/airbus.png)](https://qtc.aero/aircraft/airbus/)
- [![Hawker Beechcraft logo](https://qtc.aero/images/aircraft-logos/hawker-beechcraft.png)](https://qtc.aero/aircraft/hawker-beechcraft/)
- [![Pratt & Whitney logo](https://qtc.aero/images/aircraft-logos/pratt-whitney.png)](https://qtc.aero/aircraft/pratt-whitney/)
- [![Sikorsky logo](https://qtc.aero/images/aircraft-logos/sikorsky.png)](https://qtc.aero/aircraft/sikorsky/)
- [![McDonnel Douglas logo](https://qtc.aero/images/aircraft-logos/mcdonnel-douglas.png)](https://qtc.aero/aircraft/mcdonnel-douglas/)
- [![Mitsubishi logo](https://qtc.aero/images/aircraft-logos/mitsubishi.png)](https://qtc.aero/aircraft/mitsubishi/)
- [![Lockheed logo](https://qtc.aero/images/aircraft-logos/lockheed.png)](https://qtc.aero/aircraft/lockheed/)
- [![Fairchild logo](https://qtc.aero/images/aircraft-logos/fairchild.png)](https://qtc.aero/aircraft/fairchild/)
- [![Saab logo](https://qtc.aero/images/aircraft-logos/saab.png)](https://qtc.aero/aircraft/saab/)
- [![CASA logo](https://qtc.aero/images/aircraft-logos/casa.png)](https://qtc.aero/aircraft/casa/)
- [![Fokker logo](https://qtc.aero/images/aircraft-logos/fokker.png)](https://qtc.aero/aircraft/fokker/)
- [![Hamilton Sundstrand logo](https://qtc.aero/images/aircraft-logos/hamilton-sundstrand.png)](https://qtc.aero/aircraft/hamilton-sundstrand/)
- [![Pilatus logo](https://qtc.aero/images/aircraft-logos/pilatus.png)](https://qtc.aero/aircraft/pilatus/)
- [![ATR logo](https://qtc.aero/images/aircraft-logos/atr.png)](https://qtc.aero/aircraft/atr/)
- [![Dassault logo](https://qtc.aero/images/aircraft-logos/dassault.png)](https://qtc.aero/aircraft/dassault/)
- [![Bell logo](https://qtc.aero/images/aircraft-logos/bell.png)](https://qtc.aero/aircraft/bell/)
- [![British Aerospace logo](https://qtc.aero/images/aircraft-logos/british-aerospace.png)](https://qtc.aero/aircraft/british-aerospace/)
- [![Northrop logo](https://qtc.aero/images/aircraft-logos/northrop.png)](https://qtc.aero/aircraft/northrop/)
- [![Piaggio logo](https://qtc.aero/images/aircraft-logos/piaggio.png)](https://qtc.aero/aircraft/piaggio/)
- [![SOCATA logo](https://qtc.aero/images/aircraft-logos/socata.png)](https://qtc.aero/aircraft/socata/)
- [![Douglas logo](https://qtc.aero/images/aircraft-logos/douglas.png)](https://qtc.aero/aircraft/douglas/)
- [![EADS logo](https://qtc.aero/images/aircraft-logos/eads.png)](https://qtc.aero/aircraft/eads/)
- [![Rockwell logo](https://qtc.aero/images/aircraft-logos/rockwell.png)](https://qtc.aero/aircraft/rockwell/)

## Contact Qualified Technologies Corporation

All work is quoted: send a part number for a repair or overhaul quote.

- Phone: [909-981-0895](tel:+19099810895)
- Fax: 909-981-0962
- Email: [sales@qtc.aero](mailto:sales@qtc.aero)
- Request a quote: https://qtc.aero/contact/
- Search the part catalog: https://qtc.aero/shop/
- Address: 2133 Aviation Drive, Upland, CA 91786