Where is the criteria for lighting minimums found?

• A. NFPA Lighting Guide
• B. IENSA lighting handbook 9th edition and ANSI RP-7
• C. IEC Lighting Standards
• D. ISO Lighting Standards

Answer: (B)

Understanding lighting minimums for maintenance tasks comes from sources that tailor illumination requirements to the actual work environments and procedures in aviation. The IENSA lighting handbook, in its ninth edition, provides task-based photometric data and minimum illuminance levels specific to aircraft inspection and maintenance scenarios. Pairing that with ANSI RP-7 gives practical, recommended practices for applying lighting in aviation maintenance settings, including how to implement the levels in the shop, on the aircraft, and in inspection areas. Other references like the NFPA Lighting Guide, IEC, or ISO standards cover broader lighting safety, performance, or general guidelines, but they aren’t as focused on the exact task-specific minima used in aircraft maintenance. That focused combination—IENSA handbook and ANSI RP-7—offers the most relevant criteria for lighting minimums in this context.