505 Here

: This integrated avionics system brings high-end, high-resolution flight data and situational awareness to a light utility helicopter.

: The Liquid Inertia Vibration Eliminator (LIVE) system is a lightweight feature designed to significantly reduce airframe vibration for a smoother ride at cruise speeds. Computing & Networking

The number refers to various products and technical standards, each with its own standout features. Depending on what you are looking for, here are some of the best features associated with the "505" label: Firearms: Sauer 505 Bolt-Action Rifle