Lee, I found this at: http://www.aircraftersllc.com/51percent.htm
Documentation is Important: The Amateur Builder(s) must be able to show that they have performed at least 60 of the 119 operations (in the case of a fixed-wing aircraft) in order to qualify for the repairman certificate, and to register their aircraft in the experimental category. You will be required to sign and notarize an affidavit (FAA Form 8130-12) attesting to the fact that you have completed at least 51% of the operations required. What if you bought the project from a previous owner who never finished it? It does not matter how many previous owners a project may have had - as long as each owner intended to build the aircraft for their own education or recreation - if you can document or show documentation of the work that each did, it is as if YOU did the work! and then you should look at AC65-23a here: http://www.faa.gov/certification/aircraft/av-info/dst/amateur/ac65-23a.pdf It appears that your father would have had to apply for the Repairman Certificate. Did he ? You may have an out here or in this case, an in. And you can always ask the EAA tech department. Kevin
