Lufthansa Technik of Germany has received approval for a new generation of photoluminescent exit signs that can be used across all aircraft. 

Existing maintenance-intensive and non-environmentally-friendly exit signs at the flexible curtains in the cabin can now be replaced by the Lufthansa Technik’s GuideU material, which is already used for emergency floor path marking. With the Multitype STC approval, the exit sign made from self-illuminating, age-resistant and maintenance-free material simply has to be installed once directly at the aircraft manufacturer or as part of routine maintenance work. The signs previously had to be replaced after seven years at the latest.

"The new exit sign extends the product range of our GuideU system and allows us to fulfil the strictest demands for environmental protection as well as zero-maintenance," says Torben Biehl, Head of 

Product Development for GuideU at Lufthansa Technik. The new system is already being used ex-factory by Airbus. "We have made great progress in recent years in optimising GuideU, which is now 

translating into additional potential applications."

As many as 30 different language variants of the bilingual signs are already available, while others are in progress.

It has been twenty years since the GuideU floor path marking system was launched on the market by Lufthansa Technik, during which time the system has been continually advanced by its Hamburg-based engineers.