Cessnarepairman
The seat belts are not a recommendation, they have a component life and MUST be changed after this time. The reason is the natural degrading of the webbing used in original seatbelt webbing.
New/improved materials are used when re-webbed, so does the 10 year life still stand or not as the material used is of a better grade than that originally used?
I take the maintenance manual as the procedures to follow for continued airworthiness in accordance with the type certificate.
I agree that there are a lot of items which are total bollocks; i.e. pitot and static pipework to be replaced every 10 years.
As has been proven, my pitot and static lines have been in the aircraft for 35 years so don't suddenly fall to bits after 10 years.