Spot on Malcolm.
Last year there was a lot of fuss about Cessna seatbelts being lifed items. Can't remember which way round but I think the C152 belts weren't calendar lifed but the C150s were. So owners had to have then replaced purely on calendar life and not condition.
I note that in Germany they have fought and won an exemption from this.
There is no doubt that the villain of the piece was the CAA who still don't see there is anything wrong.