Text: Magnus Attefall
Audience: Aircraft pilots, crews, and decision-makers in the aviation industry
Introduction:
This article demonstrates how I utilize technical writing to highlight the human impact of in-flight systems. By focusing on crew wellbeing in rest compartments, I’ve reframed humidification not just as a product feature but as a contributor to safety, recovery, and operational excellence — making the message matter beyond engineering.
At high altitudes, crew rest compartments can become some of the driest environments imaginable, with humidity levels dropping as low as 3%. This extreme dryness doesn’t just cause discomfort—it can seriously impact the health, well-being, and performance of flight crews. CTT Systems’ Humidifier Onboard for crew rest compartments is changing the game, creating a healthier and more restful space for crews on long-haul flights.
Why optimal humidity matters for crew rest
Air inside aircraft cabins is much drier than on the ground, and the effects are especially pronounced for crew members who spend extended hours in these conditions. Without proper humidification, crews face dehydration, fatigue, dry skin, and even increased vulnerability to infections. These issues don’t just affect comfort—they can reduce alertness and compromise safety during critical flight operations.
Research that studied both pilots and cabin crew have found nearly 82% of participants have operated flights under the duress of fatigue.
Fatigue and sleep in airline cabin Crew: A scoping review
Candice C. Y. Wen, University of Melbourne.
Humidifier Onboard: Transforming crew rest environments
CTT Systems’ Humidifier Onboard is purpose-built for crew rest compartments, maintaining optimal humidity levels to support proper rest and recovery. By improving air quality, this system creates a sanctuary where crew members can relax, recharge, and maintain their health. Data and firsthand accounts show a clear reduction in the negative effects of dry air, such as dehydration and discomfort, when the system is in use.
The science behind humidity and crew health
Adequate humidity in crew rest areas helps prevent dehydration, dry eyes, and skin irritation, while also strengthening the body’s natural defenses. This isn’t just about comfort—maintaining the correct humidity is essential for supporting immune function and reducing the risk of illness during and after flights.
Operational benefits: Beyond comfort
Investing in crew well-being pays off in operational performance. Studies show that a healthy, comfortable rest environment boosts alertness, cognitive function, and overall efficiency. This directly contributes to safer flights and more reliable operations, making humidification a smart choice for airlines committed to excellence.
The literature reveals a high presence of fatigue and sleepiness among cabin crew and pilots, which was associated with environmental conditions, accentuating the importance of managing cabin humidity.
Fatigue and sleep in airline cabin Crew: A scoping review
Candice C. Y. Wen, University of Melbourne.
A new standard for healthier skies
As more airlines recognize the value of humidified crew rest compartments, CTT Systems’ technology is quickly becoming the standard on modern widebody aircraft, such as the Boeing 787 and Airbus A350. By prioritizing crew health and comfort, airlines can ensure safer, more efficient, and more enjoyable journeys for everyone on board.
Ready to enhance crew well-being?
Contact CTT Systems to learn more about Humidifier Onboard for crew rest compartments, or download our white paper on the benefits of humidification for flight crews.
Welcome onboard humidified Crew Rest Compartments
– for safer skies and healthier crew
- Date: June 28, 2025
- Categories: Articles
- Client CTT Systems