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SAE ARP6621

Predicting Photometric Degradation of Exterior Aircraft Lights
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SAE ARP6621

Predicting Photometric Degradation of Exterior Aircraft Lights

PUBLISH DATE 2025
PAGES 13
SAE ARP6621
This Aerospace Recommended Practice provides guidance for designers and specifiers of aircraft exterior lighting. Typical causes of light degradation and methods of predicting performance degradation in the aircraft environment are given. Although the document considers only exterior lighting, many of the principles and methods discussed apply to interior or flight deck lighting as well.
SDO SAE: SAE International
Document Number ARP6621
Publication Date Sept. 15, 2025
Language en - English
Page Count 13
Revision Level
Supercedes
Committee
Publish Date Document Id Type View
Sept. 15, 2025 ARP6621 Revision