RotorPedia (formerly Alec Buck’s EMS Helicopters) is an online reference dedicated to helicopter emergency medical services (HEMS) and helicopter air ambulance (HAA) operations, with a focus on the northeastern United States and eastern Pennsylvania.

Explore aircraft and base data, program histories, photographs, fleet changes, and other information documenting the past and present of air medical aviation.

Base Map

Explore map locations of HEMS | HAA bases in the northeast United States.

Fleet Data

Current aircraft, registrations, bases, and vendor information.

In Memoriam

Remember air medical crew members lost in the line of duty.

Latest Updates

Read the latest news, on base changes, aircaft, and program information.

PA History

LVH MedEvac is loaded, working on G Life Flight and Life Lion.

Photo Galleries

Browse HEMS | HAA photographs organized by program and location.

Accuracy Notice

RotorPedia makes reasonable efforts to provide accurate and up-to-date information. However, information may contain errors or omissions and is provided for informational purposes only.

Photo and Copyright Notice

Some photographs displayed on RotorPedia may originate from publicly available social media sources and are used for commentary, news reporting, educational, informational, and community-related purposes. Copyrights and trademarks remain the property of their respective owners. If you own content displayed on this site and have a concern about its use, please contact us for review.