Attachment 3_Interior and Exterior Lighting System.pdf

This document is a Unified Facilities Criteria (UFC) specification for aircraft hangar bay lighting design, dated 09 February 2023, detailing comprehensive control and performance requirements for illumination systems in aircraft maintenance areas.

The specification outlines specific control requirements including manual and automatic lighting controls, with guidelines for scene presetting, occupancy/vacancy sensing, time scheduling, daylight integration, and zoning. Performance requirements mandate 50 fc (foot-candles) of average horizontal and vertical illuminance, with a 3:1 illuminance uniformity ratio. Critical design issues include using stem-mounted luminaires, ensuring redundant support systems to prevent luminaire falling, minimizing shadows, and coordinating lighting placement with security protocols. Additional technical considerations include verifying special lighting equipment in hazardous locations, accounting for potential illumination reduction from bird netting, and coordinating skylight placement to avoid conflicts with control tower night operations.