What type of equipment would you find with the abbreviation AED on an aircraft?

The abbreviation AED stands for Automated External Defibrillator, which is classified as medical emergency equipment. This device is crucial in responding to cardiac arrest situations, as it can analyze the heart's rhythm and deliver an electric shock if necessary to help restore a normal heart rhythm.

On aircraft, having an AED on board is part of a comprehensive approach to ensuring passenger safety and preparedness for medical emergencies that may arise during flights. Cabin crew are trained to use this equipment, which is designed to be user-friendly, enabling non-medical personnel to assist during emergencies effectively.

The other options, while related to various types of onboard equipment, do not pertain to the AED or its function within the aircraft environment. Fire-extinguishing equipment is crucial for handling fire risks, navigation equipment helps pilots determine their position and route, and communication equipment is essential for maintaining contact with air traffic control and coordination among crew members. However, none of these categories align with the specific role and purpose of an AED during a medical emergency.