The Whelen 01-0771560-00 is a 28V LED vertical fin ground recognition light (also referred to as an LED anti-collision beacon in some configurations). It is designed for installation on general aviation aircraft—commonly Cessna and Piper models—as a modern replacement for older halogen or first-generation beacon systems.

This unit is part of the Whelen 71560 series and is intended to provide high-visibility red illumination to improve aircraft recognition on the ground and in low-light conditions. It uses solid-state LED technology, eliminating moving parts and significantly improving reliability and lifespan compared to legacy beacon designs.

Its primary features include:
LED-based ground recognition / beacon lighting for aircraft
28V operation for general aviation electrical systems
High-visibility red output for improved aircraft detectability
Solid-state design with no rotating mechanisms or bulbs
Low power draw with high efficiency (~0.11A typical)
Designed for Cessna and Piper airframes (various mounting variants)
Vibration-resistant aerospace construction
Direct replacement for older Whelen beacon assemblies

This type of light is typically installed on the vertical fin or fuselage and is used to increase aircraft visibility during taxi, takeoff, and ground operations, especially in busy airport environments or low-light conditions.