If it’s Part of Something that Flies, it Needs to be AS9120 Certified

"Findings An auditor’s report usually contains major findings, minor findings, and opportunities for improvement. Major findings refer to system failures and other things that greatly affect your company’s chances of earning AS9120 certification. Minor findings are issues in which corrective action needs to be taken. Lastly, opportunities for improvement are simply the auditor’s comments on how the system may be improved. Work together It is advisable to for companies to work with the auditors instead of treating them like adversaries. Establishing a good working relationship with them will make the audit process less stressful and will enable you to argue the findings, if needed."
http://www.isaregistrar.com/blog/if-its-part-of-something-that-flies-it-needs-to-be-as9120-certified/