Hi everyone,
Need a bit of help here, I have a one time STC to modify the flight controls and panel for a 1956 C-172 where I did all the work and fought my way through the FAA to get the STC and reissue of the Airworthiness Cetificate.  I would like to find out if I can make this into a multiple certificate and utilize it other early Cessnas that could benefit fromt this work.  I have the extensive documentation and inspection records on file and can produce electronic scanned copies of all the documents.  I am looking for a good 1956 C-172 to buy and modify and then add the O-360 and prop conversion-should be a great plane once totally built out with new paint and interior.  If you can advise on any of this please let me know.

Thanks,
Jerry Lane