319/320
on the Trent there is an asterisk on the spinner extension piece, it's next to where all the balance weight screws are fitted. As for sharpies - NO, NO, NO...
For Lomopaseo - the blades are 'lifed' just like other rotating components in the engine, only the blades are normally 'Cat B' lives, not 'Cat A' lives, can be found in Chapter 5 of the Enigne Manual, and they are governed in cycles.
Regards,
N1 Vibes