Auditing in AS9100 Rev D

Answer:
There are a number of past blog articles that can help you to work on auditing a QMS such as “6 main steps in the internal audit process according to AS9100 Rev D” (https://advisera.com/9100academy/knowledgebase/6-main-steps-in-the-internal-audit-according-to-as9100-rev-d/) and “developing an internal audit checklist for AS9100 Rev D” (https://advisera.com/9100academy/knowledgebase/developing-an-internal-audit-checklist-for-as9100-rev-d/). For a more detailed look at using the ISO 19011 standard for management system auditing the article from 9001Academy titled “13 steps for ISO 9001 internal audit using ISO 19011” (https://advisera.com/9001academy/knowledgebase/13-steps-for-iso-9001-internal-auditing-using-iso-19011/) may also be helpful.
One other tool tha t can help is this whitepaper titled “Clause-by-clause explanation of AS9100 Rev D”, https://info.advisera.com/9100academy/free-download/clause-by-clause-explanation-of-as9100-rev-d