Which helicopter can be used for MEDEVACs and is equipped with up to 15 litters?

The CH-46 helicopter is designed with the capability to perform Medical Evacuation (MEDEVAC) missions and is equipped to carry up to 15 litters, making it well-suited for transporting multiple patients simultaneously. Its spacious interior allows for effective loading and unloading of casualties, which is critical in urgent medical situations.

This helicopter's configuration includes features that facilitate the rapid deployment of medical personnel and equipment, enhancing its utility in battlefield or disaster relief scenarios. The design choices made for the CH-46, including its dual-rotor system, also contribute to stability and lifting capacity, allowing it to operate efficiently in a variety of environments and conditions.

The other helicopters listed have different primary roles or limitations that make them less suitable for mass casualty MEDEVAC scenarios. For instance, while the CH-47 is a heavy-lift transport that can also be used for MEDEVAC, its litter capacity and configuration are not as optimized for this specific function as that of the CH-46. The UH-60 also serves various purposes, including MEDEVAC, but its litter capacity is generally less than that of the CH-46. The AH-1Z is primarily an attack helicopter, not intended for MEDEVAC operations.