Position and Anticollision Lights - Fixed-Wing Aircraft ARP991

This document recommends design objectives for navigation, position, and anticollisionlight systems for visual detection and collision avoidance between airplanes in flight and on the ground. Customers for new airplanes or lighting components, and designers or manufacturers may take advantage of this document in specifying the initial requirements that, in most cases, significantly exceed the applicable minimum intensities as shown in the Federal Aviation Regulations as well provide better stability, longer life and lower operating costs.