Still, Ageing aircraft are at 15 years plus - so they qualify anyway for typical old aeroplane faults and issues.
I agree. But I know a great many who don’t, the immortal statement being “This is old equipment and reliability improves with age, so we’re not approving funding to investigate (safety related) faults”. Made by RAF at Harrogate in 1992 (part of AMSO, who controlled funding to maintain airworthiness). Subject – C130 equipment exhibiting cracks propagating at an alarming rate. Believe me, you keep those letters when its your signature on the PE(CA) 6/7 or DDP.