Well as you can tell I am somewhat unfamiliar with gliders and there operations, but am truly amazed at the utility of them being able to land it in a tiny/hilly field and get the wings off and back home so easy, I have a few questions, when re-installing the wings and re rigging does that have to be done by a certified airframe mechanic? does a glider have to have a certificate of airworthiness like powered aircraft or can the glider owner upon becoming proficient in the crafts systems work on/and remove and reinstall the wings and rigging themselves?,