Air Cycle Machine Repair & Overhaul
FAA & EASA certified air cycle machine repair and overhaul.
About the Air Cycle Machine
An air cycle machine (ACM) is the rotating heart of an air cycle refrigeration pack in the environmental control system, mounted downstream of the bleed-air heat exchangers. It typically integrates a centrifugal compressor and an expansion turbine on a common shaft, with the turbine extracting energy from pressurized bleed air and dropping its temperature sharply to condition cabin and avionics air. The shaft rides on air-bearing or oil-lubricated journal and thrust bearings that demand precise tolerances and balance. Service drives overhaul because high rotational speeds and thermal cycling produce bearing wear, shaft scoring, foil-bearing fatigue, seal leakage, blade erosion, and rotor imbalance. Inspection commonly reveals coking, corrosion, and clearance loss, all of which degrade pressure ratio and cooling capacity until restoration is required.
Our Air Cycle Machine Repair Capability
QTC repairs and overhauls air cycle machine components to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our engineers — including former OEM air cycle 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 Air Cycle Machine Parts We Service
Click a part number for repair details and to request a quote.
Frequently Asked Questions
Does QTC repair air cycle machine components?
Yes. QTC repairs and overhauls air cycle machine components under our FAA & EASA Part 145 approvals. Our catalog lists 5 air cycle machine part numbers. Request a quote to confirm capability and turnaround.
What aircraft use the air cycle machine?
In our catalog, air cycle machine part numbers appear on Cessna, Beech, Embraer. See the full parts list below.
What is involved in air cycle machine 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 Air Cycle Machine Repair
Send us your part numbers and condition. Our engineers respond with repair scope, turnaround, and pricing.