Abstract: A device, system and method improve operational safety and aid in the ongoing maintenance and management of an aircraft. The device continuously monitors several sensors to perceive the environment inside and/or outside of the aircraft cabin. Readings are sent periodically or in real-time or instantaneously to a ground station. The ground station logs the readings and creates a detailed aircraft log to aid in the maintenance and management of the aircraft. If the device detects an unsafe value or change from one of the sensors, it will trigger an alarm to alert the pilot. The alert will also be transmitted to the ground station. The unsafe value or change that automatically triggers the alarm is indicated on the device and aids the pilot in taking corrective action. The pilot or passenger may also manually trigger the alarm and notify the ground station that there is an immediate need for help.