After a bit of advise please.
We keep getting indication error with EGT or CHT. Every time the aircraft goes for maintenance, they clean the contacts and within 2 weeks, we have either a missing EGT (normally number 6) or over heating CHT which goes to red then goes normal and goes red intermittently.
I was told there is an SB, but this problem is recurring even if the wiring harness is changed.
Is there is a permanent fix for this?