Noise Protection Hangar in Hamburg
A stationary engine test (a so-called "run-up") is prescribed after aircraft overhaul and after work conducted on the engine-related aircraft systems as part of nightly maintenance operations. At the end of this, the functionality of all power units and the interaction of cockpit systems and engines is tested. Both the starting of the engines and the run-up for different power levels generate noise emissions in the surrounding area. In order to protect both staff on site and the residents of the areas around the site, Lufthansa Technik has used a noise protection hangar since 1961 as a form of active noise protection for engine run-ups. In 2002, the existing structure was no longer suitable for modern, wide-bodied aircraft, and it was replaced by the world's first enclosed noise protection hangar on Apron 6 at the Lufthansa base.