I meant that the UAT in those jets where BVM as every single UAT we have in the jets on our club. I modified the post above...
The weird thing is that these three UATs where installed a completelly diferent times.
The one in my Rafale had 1.5 years.
The one in the F-16 1/6 has about 3 months
The one on the L-39 had a little less than a year
Only thing in common is season change from summer to winter... passing through autum of course.

Harley sorry for the bad info about the manual it has been a long time since I read it so I guess I must forgot what it said exactly, I will read it again...[]
Anyway I thing BVM UATs are of great quality and work great, I will continue using them in all my jets.

Michel