Bellows Repair & Overhaul
FAA & EASA certified bellows repair and overhaul.
About the Bellows
A bellows is a thin-walled, axially flexible metallic element, usually formed as a series of convolutions, that accommodates dimensional change while sealing or transmitting pressure. In aircraft systems it serves as a pressure-sensing or temperature-sensing capsule, a flexible duct coupling absorbing thermal growth and vibration, or a compensating element within valves and regulators that converts pressure differential into mechanical motion. Its convolutions deflect repeatedly under cyclic pressure and thermal loading. Repair and overhaul are driven principally by convolution fatigue cracking and pinhole leakage from high-cycle flexing, corrosion and stress-corrosion of the thin wall, loss of spring rate or set that shifts calibration, weld-joint failure at end fittings, and external mechanical damage that compromises the pressure boundary.
Our Bellows Repair Capability
QTC repairs and overhauls bellows components to the original manufacturer's specifications under our FAA and EASA Part 145 approvals. Our engineers — including former OEM aircraft components 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 Bellows Parts We Service
Click a part number for repair details and to request a quote.
| Part number | Make | Model |
|---|---|---|
| 774636-3 | N/A | N/A |
Frequently Asked Questions
Does QTC repair bellows components?
Yes. QTC repairs and overhauls bellows components under our FAA & EASA Part 145 approvals. Our catalog lists 1 bellows part number. Request a quote to confirm capability and turnaround.
What aircraft use the bellows?
Bellows part numbers in our catalog span multiple aircraft platforms. See the full parts list below.
What is involved in bellows 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 Bellows Repair
Send us your part numbers and condition. Our engineers respond with repair scope, turnaround, and pricing.