Freda Checks
I'll redirect you to my post #1837.
Direct fron the RA
Maintenance records should be retained until the work it records has been
invalidated by documented work carried out subsequently (for example, Scheduled
Base Maintenance (SBM), Major maintenance, or equivalent); RA4311 and MAP-01
Chapter 7.6 provides further regulation and guidance in this respect.
No where does it say keep until the world ends