Dual Heat Exchanger Repair & Overhaul
FAA & EASA certified dual heat exchanger repair and overhaul.
About the Dual Heat Exchanger
A dual heat exchanger is a combined heat-transfer unit that integrates two heat exchange stages, typically primary and secondary air-to-air cores, into a single assembly within the air cycle cooling path. Hot bleed or compressed air is progressively cooled by ram or fan air passing across finned cores, conditioning the air before and after the air cycle machine to support cabin temperature control. Combining stages saves weight and installation volume. Common degradation modes include fatigue and thermal-stress cracking at braze joints, fins, and tanks, internal leakage between the hot and cold passages, external core leakage, and fin fouling, corrosion, or erosion that reduce thermal effectiveness and increase pressure drop. These conditions drive leak and performance testing, core repair, and overhaul.
Our Dual Heat Exchanger Repair Capability
QTC repairs and overhauls dual heat exchanger components to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our engineers — including former OEM heat transfer specialists — perform teardown, inspection, cleaning, component replacement, functional and leak testing, and certification, and develop repairs for rejected and beyond-economic-repair (BER) hardware.
All Dual Heat Exchanger Parts We Service
Click a part number for repair details and to request a quote.
| Part number | Make | Model |
|---|---|---|
| 11-811528-2 | Dassault | Falcon 2000 |
| 194004-1 | Cessna | 550 |
| 779215-1 | Saab | 340 |
| 779215-2 | Saab | 340 |
Frequently Asked Questions
Does QTC repair dual heat exchanger components?
Yes. QTC repairs and overhauls dual heat exchanger components under our FAA & EASA Part 145 approvals. Our catalog lists 4 dual heat exchanger part numbers. Request a quote to confirm capability and turnaround.
What aircraft use the dual heat exchanger?
In our catalog, dual heat exchanger part numbers appear on Saab, Cessna, Dassault. See the full parts list below.
What is involved in dual heat exchanger repair and overhaul?
Our process typically includes incoming inspection, disassembly, cleaning, non-destructive evaluation, repair or replacement of worn elements, functional/leak testing, and certification with the appropriate airworthiness release.
Request a Quote for Dual Heat Exchanger Repair
Send us your part numbers and condition. Our engineers respond with repair scope, turnaround, and pricing.