Product Code:SAE AIR5689Titleight Transmitting Glass Covers for Exterior Aircraft LightingIssuing Committee:A-20b Exterior Lighting CommitteeScope:This SAE Aerospace Information Report (AIR) provides definitions of and inspection criteria for defects commonly encountered in molded and finished glass covers for exterior aircraft lighting.This document covers, but is not limited to, visual inspection and evaluation recommendations for molded glass covers used in exterior aircraft lighting applications. The included definitions are for those defects most commonly encountered. The goal is to provide specific evaluation criteria in the following areas: a. color; b. internal quality; c. external (surface) quality; d. dimension; and e. coatings.