Public or Private CofA. Whats the difference?

[phiggsbroadband]

I was wondering what is the effective difference between Public and Private CofA, for say a Cessna 172N?

I realise that the plane can only be used commercially with a Public CofA, but is there any difference in the servicing arrangements, and charges?
Also are the 'parts lifetimes' any different?

[Whopity]

Public and Private C of A ceased to exist in 2006! Maintenance is now the key to what you can use an aeroplane for.

[A and C]

It never fails to astound me that the old regulations seem to live on for so long !

[phiggsbroadband]

Hi Whopity, does that mean that every aircraft (including the Private and Permit planes) are now available for Flying School use for training purposes?

[A and C]

You can't use a permit aircraft on a flying school.

For aircraft with a C of A it depends on maintenance issues, the big one being that the engine can't have run past TBO + 20% or calendar life + 20%.