Owner’s Service Bulletin – OSB 29 Issue 1 dated 16th of June 2016.
Applicability – Ikarus C42 all models.
The problem appears primarily to affect high hours (1000hr+) early examples of the C42 on which the affected cut-outs were made manually. Later models are machine cut, and are thought less likely to exhibit the problem but they remain subject to this service bulletin until further notice.