RE: Is it time to revisit AMA safety code rule 4 ?:
Also, did some research and FAA AC 91-57 regulation states that a model aircraft must be proven airworthy before being flowen before spectators. Here is the link:
http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/0/1acfc3f689769a56862569e70077c9cc/$FILE/ATTBJMAC/ac91-57.pdf
So, AMA member or not you must abide by this rule.