Ozone Converters Repair & Overhaul

Ozone converters protect cabin air quality at cruise altitudes, where outside air drawn in for pressurization and ventilation can carry elevated concentrations of ozone. Installed in the conditioned-air path, the catalytic ozone converter chemically breaks down ozone into ordinary oxygen before that air reaches the cabin, helping keep ozone within acceptable limits for passengers and crew. The family includes both ozone converters and catalytic ozone converters serving this same air-quality function.

An ozone converter is fundamentally a catalytic device. It is built around a high-surface-area catalyst substrate housed in a flow-through casing, sized so that bleed or conditioned air passes across the active material with minimal pressure loss. Rather than wearing mechanically, the catalyst loses effectiveness over time: it can be poisoned or fouled by contaminants in the air stream, and its conversion efficiency gradually declines until it no longer meets requirements.

For this reason, ozone converters are periodically tested and overhauled, with attention focused on catalytic efficiency and substrate condition rather than on rotating wear. QTC services ozone converters for operators of platforms from makes including Gulfstream, Boeing, Douglas, and Bombardier.

QTC evaluates the ozone converter against its catalytic performance requirements, inspecting the housing, the catalyst substrate, and the air-path interfaces for contamination, fouling, damage, and signs of efficiency loss. The unit is cleaned as appropriate, and the casing and mounting features are checked for integrity and leak-tightness.

Where the catalyst no longer meets conversion requirements, the converter is recharged or its catalytic element is restored or replaced so that ozone conversion efficiency is re-established. After this catalytic restoration, the unit is reassembled and functionally verified to confirm acceptable conversion performance and airflow before being returned to service with the appropriate airworthiness certification. Because performance hinges on the catalyst rather than moving parts, efficiency verification is central to the overhaul rather than balancing or rotating-component work.