Update on service bulletin 2016-01BIS. Fuel lines now available.
Problem: Our current supplier indicates that the life time of the used fuel lines in the kits mentioned above , can not exceed 1 year. After this period automotive fuel lines might harden and leak.
Inspection: check if the fuel lines are not leaking / damaged.
Solution: replace fuel lines.
Most hose suppliers advise to use PTFE (Teflon) hoses ( comply to SAE J1737 - lifetime 5 years) .
When using regular automotive fuel lines , make sure to check them before every flight and replace after 1 year. Most automotive fuel line suppliers are opposed to using these lines in aircrafts!
Alternative fuel lines are available from stock.
Check the service bulletins section on your engine page to see if your engine is affected, or to download this service bulletin as pdf.