Swedish cabin environment specialist CTT Systems has won a contract to supply air humidifiers for an unnamed airline's Airbus A350 fleet.

CTT says the equipment will be line-fitted to the business-class sections of the operator's entire A350-900 fleet, with aircraft scheduled for delivery from the second half of 2019 until 2023.

The supplier says the operator is the second A350 airline customer to order humidifiers for the passenger cabin on the long-haul twinjet.

A previous deal disclosed earlier this year with an unnamed airline covered the equipment's installation in the business-class section, cockpit and crew-rest compartments of an A350 fleet.

CTT argues that although the airframers have made "great progress in lowering cabin altitude, reducing noise and vibrations, generating draft-free and fresher air, multiple temperature zones and advanced mode lighting" on the their new-generation widebodies – the A350 and Boeing 787 – improving humidity levels will be the "next" step to "elevate the total cabin environment experience".

CTT acknowledges that a lower cabin altitude on the 787 and A350 versus previous types results in a "passive” relative humidity increase of up to 2%. But the supplier asserts that, without humidification systems, a typical business-class cabin has a relative humidity of 6-10%, which it describes as "drier than any of the driest climates on Earth".

The company's humidifiers are standard equipment in crew-rest compartments on 787s and an option for the compartments on A380s, A350s and the under-development 777X.

Earlier this year, two 777X customers ordered humidifiers for the premium cabins on the twinjets.

Source: Cirium Dashboard