It would be nice if the FAA were able to bill large companies making planes the public is intended to fly on commercially for all of the hours required to proce

It would be nice if the FAA were able to bill large companies making planes the public is intended to fly on commercially for all of the hours required to process the 'type certification' fully and exhaustively. That process would include validating all aspects of the mechanical specifications and changes of parts (reused already OK parts from the same authorized suppliers would be a quick check-off), mechanical engineering, electrical engineering, computer software, and any changes for maintenance and end operators. Describing it fully like that, I believe the only benefit to 'type certification' should be training for the end users, but major overhauls should require retraining and that should be caught.