Optimizing humidity in aircraft

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Humidifier Pad Assy Original Consumable

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Humidifier Pad Assy

The Humidifier Pad Assy from CTT Systems is developed and tested in close collaboration with Munters to comply with OEM and line fit requirements from Airbus and Boeing. The CTT Humidifier Pad Assy uses an application specific pad material that was developed to meet all specifications and obtain full system compatibility with the OEM humidification system. Since the launch of the Airbus A380, CTT Systems has been at the forefront, developing OEM humidification systems and original pad assy’s to all new widebody programs.

Humidifier pad overview

The Humidifier Pad Assy by CTT Systems ensures 100% OEM compatibility. The humidifier pad module (“pad”) is a subsystem inserted in the OEM humidifier housing. Humidifier pads play a vital role in ensuring performance, safety, and long‑term reliability of Inflight Humidification (IFH) systems. With more than 100 million operational hours accumulated since 2007, CTT’s OEM pads provide a unique combination of application‑specific materials and proven system performance.

Innovative material development

When developing line-fit technology, CTT Systems and Munters co‑developed a new pad media — GX60‑CTT, engineered specifically for line fit in aircraft with some specific properties and key features to meet the rigorous aviation standards set by Boeing, Airbus, the FAA, and the FDA. 

For more information about CTT’s application specific pad material and key features, read OEM-Certified Humidifier Pads for Inflight Humidification Systems 

Aviation standards and OEM humidifier

The CTT Systems humidifier pad assembly has undergone extensive testing to ensure that it can handle maximum air velocity, adhere to carryover limits, and handle appropriate pH levels. It features a high fire rating, prevents legionella transfer, and has active carbon added to the ceramic slurry for odor control. The CTT pad material is developed, tested and qualified to ensure 100% integration and compatibility with the OEM humidifier housing.

Ensuring reliability and safety

A critical aspect of the humidifier pad material is its contribution to the reliability and safety of the air supply system. As the air for the flight deck and crew rest areas passes through the Humidifier Onboard system, it is important that the pad material remains intact, without releasing any particles or collapsing. The original humidifier pad assembly material from CTT Systems meets FAA Part 25 and EASA CS-25 airworthiness standards, as well as Boeing and Airbus requirements for design, testing, and documentation, ensuring consistent and safe airflow. 

Addressing the dry cabin air

 Over 20 years ago, CTT Systems pioneered  by developing the Humidifier Onboard system based on evaporative cooling technology. This innovation was first introduced by Airbus for crew rest compartments on the A380 program, followed by Boeing for crew rests and flight deck on the 787 program. CTT was also selected as the sole supplier of humidifiers for flight deck, crew rests and passenger cabins to the A350 and Boeing 777X program. Today, more than 3,000 Humidifier Onboard systems are in service on airlines worldwide.

Conclusion

The Humidifier Pad Assy from CTT Systems represents a significant advancement in aircraft humidification technology. With its specific material, it ensures full compliance with all relevant aviation authorities and industry standards. The Humidifier Pad Assy is not just a component; it is a crucial sub-system designed to work in tandem with the OEM humidifier housing, providing consistent, reliable, and high-performance humidified air flow. Since its introduction in 2007, the CTT Systems Humidifier Onboard system with the OEM‑Certified Humidifier Pads has documented exceptional reliability and performance in roughly 1,500 widebody aircraft.

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