| Agency | ONA |
| Source | IGIS Own Motion Inquiry |
| Duration (date initiated to date finalised) | 30 August 2016 – 9 January 2017 |
| Number of recommendations made | Nil |
| Percentage of recommendations accepted | NA |
| Implementation progress as at 30 June 2019 | NA |
In January 2017, the Inspector-General completed the fourth inquiry into the analytic independence of the ONA. The inquiry was not prompted by any particular concern, but was intended to update previous inquiries. As with the previous inquiries, this inquiry found no evidence of interference with the independence of ONA assessments. It made no formal recommendations.
The assessments and other documents examined indicated that ONA observes appropriate procedures. Reports reviewed contained comprehensive endnotes that captured information from both formal and informal sources. Lengthy commentary revealing the analyst's consideration of the referenced material was often included. ONA policies and practices encourage contestability, and ONA has an appropriate structure for critically reviewing key judgments made in assessments.