As with many technological devices, night vision goggles (NVG) require periodic inspections and servicing to maintain reliability, function ability, and air worthiness. The manufacturer and FAA require aviator NVG to be inspected every 180 days. Night Flight Concepts™ performs the 180 day service inspection utilizing the ANV-126 test  set by Hoffman Engineering. The ANV-126 test set is the most accurate and complete test set in the industry.