"C J Campbell" wrote in message news:9_mdnSZx5qHW2MncRVn-

Actually, when Cessna started building new piston aircraft, they were
re-certified under the new regulations.

If you are talking about the singles they most certainly were NOT.
The 172R and 172S were issued as amendments to type certificate 3A12,
the late model 182's on 3A13, and the 206's on A4CE. All use CAR3 as
their certification basis.

While FAA keeps talking about requiring changes to TC's and STC's to
correspond to the current requirements, they've not ever actually made that
change to the regulations.