When operating a single engine, float-equipped helicopter in commercial air service beyond gliding distance from shore, what equipment is required?

When operating a single-engine, float-equipped helicopter beyond gliding distance from shore in commercial air service, it is essential to understand the safety measures in place to mitigate risks associated with potential water landings. The requirement for life jackets for each passenger is a critical safety regulation.

Life jackets are vital because they provide buoyancy and enhance the chances of survival if a water landing occurs. In an emergency situation, having a life jacket readily available ensures that passengers can quickly secure themselves, which is particularly important in the case of an unexpected ditching where time is limited.

While life rafts and water-type emergency locator transmitters (E.L.T.s) are important safety measures that contribute to overall safety in aquatic operations, they might not be mandatory in all configurations or circumstances. The specific requirement for life jackets is clear, as they are essential for personal floatation and safety immediately upon entering the water.

In summary, equipping each passenger with a life jacket is a crucial requirement for operational safety in this scenario, making it the correct answer for what is mandatory when flying a float-equipped helicopter beyond gliding distance from shore.