The company TL-ULTRALIGHT has published the servis bulletin 1. S. ST.2001 accoring to the experience from operating of TL 96 Star and TL 2000 Sting.

This technical advice covers following planes with serial number:

TL 96 STAR serial number 98 S 01 up to 02 S 122
TL 2000 Sting serial number 01 ST 01 up to 02 ST 12

Any aircraft manufactured after these contains already improved wing balls, does not have to comply with this servis bulletin.

The company TL-ULTRALIGHT s.r.o. gives the directives to change main wing suspension („wing balls“) after every 300 flying hours or after 3 years, it depends which limit is fulfiled sooner. The suspensions can be changed directly by the manufacturer or by the dealer in particular country. The set of wing balls is also available to purchase in TL factory directly and you can replace them personaly.