What is CTS on Boeing 737? (Cabin Temperature Selector)

The Cabin Temperature Selector, also known as CTS, is a crucial component of the Boeing 737 aircraft that allows for precise control of the cabin temperature. It is a vital part of the environmental control system, which ensures the comfort and well-being of passengers on board. In this article, we will explore the functionality and importance of the Cabin Temperature Selector on the Boeing 737.

The Role of Cabin Temperature Selector

The Cabin Temperature Selector is responsible for regulating and maintaining the desired temperature inside the aircraft’s cabin. It allows the flight crew to control the heating and cooling systems that influence the overall comfort of passengers and crew members.

The CTS is typically located on the aircraft’s overhead control panel, within easy reach of the flight crew. It features a dial or selector switch that allows the crew to adjust the cabin temperature as required. By turning the dial or activating the switch, the crew can either increase or decrease the temperature inside the cabin.

The Cabin Temperature Selector is connected to various components of the environmental control system, including the air conditioning packs, valves, and sensors. When the flight crew adjusts the CTS, the system responds by altering the operation of these components to achieve the desired temperature.

The CTS provides a wide range of temperature control options, enabling the crew to accommodate the preferences of both passengers and crew members. This is particularly important during long-haul flights where maintaining a comfortable cabin temperature is essential for the well-being and satisfaction of everyone on board.

How the Cabin Temperature Selector Works

The functioning of the Cabin Temperature Selector involves multiple components working together harmoniously to achieve the desired outcome. Let’s take a closer look at the step-by-step process:

1. Input from the Flight Crew

The first step in using the Cabin Temperature Selector is for the flight crew to input their desired temperature setting. They can do this by turning the dial or activating the switch on the CTS.

2. Sending Signals to the Environmental Control System

Once the desired temperature is selected, the Cabin Temperature Selector sends signals to the environmental control system. These signals act as commands for the system to start adjusting the temperature accordingly.

3. Activating Cooling or Heating Systems

Based on the input from the Cabin Temperature Selector, the environmental control system activates the appropriate cooling or heating systems to achieve the desired temperature. This may involve adjusting the operation of the aircraft’s air conditioning packs, regulating the airflow, and controlling the temperature of the air supplied to the cabin.

4. Monitoring and Adjusting

During the flight, the Cabin Temperature Selector continuously monitors the cabin temperature and evaluates whether any adjustments are necessary. If there are any deviations from the desired temperature, the system makes necessary modifications based on the flight crew’s input.

The Importance of the Cabin Temperature Selector

The Cabin Temperature Selector plays a vital role in ensuring the comfort and well-being of passengers and crew members. Here are some key reasons why it is of utmost importance:

1. Passenger Comfort

Ambient temperature significantly impacts passenger comfort during a flight. The Cabin Temperature Selector allows the flight crew to create an environment that suits the preferences of passengers, ensuring a more pleasant and enjoyable journey. It helps maintain a comfortable temperature inside the cabin, regardless of changing external conditions.

2. Crew Satisfaction

Flight crew members spend extended periods on board, making it essential for their comfort and well-being. The Cabin Temperature Selector enables them to adjust the cabin temperature to their liking, creating a more conducive and productive working environment.

3. Health and Safety

The Cabin Temperature Selector also plays a crucial role in maintaining a healthy and safe environment on board. Optimal cabin temperatures help prevent fatigue, dehydration, and other health issues that can arise from extreme temperatures. Additionally, it ensures that crucial onboard systems and equipment function optimally.

Overall, the Cabin Temperature Selector on the Boeing 737 aircraft is a critical component that allows for precise control of the cabin temperature. By providing comfort, satisfaction, and safety, it contributes to a more enjoyable and efficient flying experience for passengers and crew members alike.

For More: What is PVD on Boeing 737? (Paravisual Display)