I spoke with Ms. Spence from the Civil Aviation Safety Authority (CASA) and raised the issue of the agency’s poor history of integrity and transparency when handling complaints from industry stakeholders, including Mr. Geoff Barker. I pointed out that the Fair Work Commission had found that Mark Lewis, a disgruntled former employee of Geoff Barker and current CASA employee, had taken adverse action against Geoff Barker and had lied during Commission proceedings.
Ms. Spence admitted that CASA should have handled matters better regarding Mr. Barker; however, she declined to specify what should have been done differently or what changes would be implemented following the completion of internal investigations. She stated that CASA is currently investigating assertions that Mr. Lewis and Mr. Scott Duffy provided false and misleading evidence to the Commission while knowing that information to be untrue.
Furthermore, Ms. Spence confirmed that CASA has chosen not to release the independent probe into its remotely piloted aircraft system, which was completed in December 2021. When I requested access to the report, Ms. Spence took the request on notice.
I raised the question of whether CASA could still be trusted, given the volume of complaints regarding its lack of ethics and persistent abuse of authority.
— Senate Estimates | February 2026
Transcript
Senator ROBERTS: Thank you for appearing tonight. This one really disturbs me. Isn’t it true that CASA relied on a conflicted officer, Mr Mark Lewis, who the Fair Work Commission found had a personal vendetta against his former employer Mr Barker, and evidence was not credible enough—essentially lies—to take actions that severely harmed Mr Barker, his staff and his company?
Ms Spence: I’m aware of the issue that you’re referring to. I would say that, certainly, CASA did not do things as well as we should have in relation to some of the issues that Mr Barker has been involved in. But I do not agree with the way in which you described it then.
Senator ROBERTS: Thanks, Ms Spence. Isn’t it true that Mr Lewis was allowed to work on matters involving his former employer, with CASA knowing it was an obvious conflict of interest, and dishonestly tried to hide this fact? Isn’t it true that Mr Lewis and his manager Mr Scott Duffy gave false or misleading evidence to the commission?
Ms Spence: Again, I don’t agree with the way you’re describing it. I’m not saying CASA was without fault, but we did have appropriate conflict-of-interest arrangements in place, and we’re looking into the issues Mr Barker has raised about the assertion of misleading evidence that was provided to the Fair Work Commission. But we’re looking into that at the moment.
Senator ROBERTS: It must be serious, because you’ve admitted the slightest hint of responsibility, which I’ve never seen before, and you have also said you’re looking into it. Well, that’s not good enough. Isn’t it true that CASA, relying on Mr Lewis’s false claims that Mr Duffy knew were false, pursued heavy-handed enforcement, including criminal allegations and jail threats, that effectively shut Mr Barker’s business down and put his staff out of work?
Ms Spence: No, that’s incorrect.
Senator ROBERTS: What do you say is correct?
Ms Spence: As I said, there are issues that we should have done better. I do not accept the assertions being made about CASA’s staff taking the kinds of actions you’ve just described. I think there were lessons that we’ve learnt around how we should manage conflict of interest, which does happen.
Senator ROBERTS: What are those lessons?
Ms Spence: I think they’re around the perception of conflicts of interest and making sure we’re closely monitoring how often these can happen. But I guess one of the things I would say is that in order to have people with the appropriate qualifications to operate as inspectors within the organisation they do need to have industry experience. We do have strong conflict-of-interest mechanisms in place, but that doesn’t mean we shouldn’t be monitoring them more closely.
Senator ROBERTS: Are you saying that integrity can be cast aside for industry experience?
Ms Spence: Sorry?
Senator ROBERTS: Are you saying that someone’s integrity can be ignored if he’s got industry experience?
Ms Spence: No, I’m definitely not saying that.
Senator ROBERTS: Isn’t it true that CASA regularly removed or downgraded Mr Barker’s firm UAS Pacific’s licence privileges without proper process and then sat on routine approvals for months or years, choking what was left of the business, destroying good will and reputation and driving clients away?
Ms Spence: No, that’s not correct.
Senator ROBERTS: Isn’t it true that multiple substantive bullying complaints were dropped by the commission only because CASA promised to change its behaviour going forward, not because CASA’s past behaviour was found acceptable by the Fair Work Commission?
Ms Spence: A commitment was made around the engagement between the two staff members Mr Barker had raised concerns with, but I would not agree with the way you’ve described the outcome from the Fair Work Commission, where they I think first of all determined that they didn’t actually have jurisdiction on the matters being put to them, which is not the same as saying there was a guilty verdict in terms of the way our staff had behaved. And I do not accept the allegations that have been made.
Senator ROBERTS: I’m advised that the Fair Work Commission found a personal vendetta against Mr Barker from his former employee.
Ms Spence: I would have to check the transcript, but I do not accept the way you’ve described the outcomes from the Fair Work Commission.
Senator ROBERTS: Isn’t it true that CASA failed to hold anyone to account for bullying and giving false or misleading statements to the commission, effectively condoning that conduct as Mr Barker and his staff remained unsatisfied?
Ms Spence: As I said, there is one element that we are looking into around the question of what information was provided to the Fair Work Commissioner, but in terms of the outcome of the process, I do not accept the way that you’ve described the way in which the matter has been handled.
Senator ROBERTS: What’s the conflict of interest you’ve unearthed? What work did you need to do on conflict of interest?
Ms Spence: No. As I said, we were aware of the issues relating to Mr Lewis, who’d been a former employee of Mr Barker, and we did have conflict-of-interest arrangements in place. That’s not the issue that I’m referring to. I do understand that some comments were made in the Fair Work hearing that we’re looking into to see whether they were misleading. We do not consider that they actually impacted the outcome of the Fair Work Hearing, but we are looking into it because, to your point, integrity is important. We want to make sure no-one has said anything that could be misleading to such an important organisation as the Fair Work Commission.
Senator ROBERTS: Isn’t it true that CASA has left false accusations on file about Mr Barker, his company and staff without correction, annotation or apology, allowing CASA to keep seriously hurting their ability to work and earn?
Ms Spence: No. We have advised one person who was in a similar situation. There was one issue where the original allegation was subsequently withdrawn, and that was provided in writing. We have taken whatever efforts we can, without destroying official documents, to make it clear that (1) people can’t access our system to find the original assertion that was made, and that (2) if anyone were to get access to it, it would be very clearly marked to say that this matter was overtaken by subsequent events.
Senator ROBERTS: Isn’t it true that an independent probe into CASA’s remotely piloted aircraft system, drones, branch’s alleged wrongdoing was finished on 12 December 2021 and that CASA refuses to release it or carry out all recommendations? And isn’t the real reason that public release would confirm systemic wrongdoing inside the CASA remotely piloted aircraft systems branch?
Ms Spence: No. The report that you’re referring to has been considered within CASA. It was prepared for CASA. It looked at the way in which we were undertaking our regulatory arrangements. It identified reforms that we could implement, and we’re working our way through those. We didn’t accept some of them, but that’s perfectly reasonable. We’re making sure that we’re looking at how we do our work, and we’re improving things as we need to.
Senator ROBERTS: Can we have a look at that report?
Ms Spence: Can I take that on notice please?
Senator ROBERTS: Sure. Isn’t it true that the combined effect of CASA’s conflicts of interest, discredited evidence, process breaches, suppressed report, punitive actions and leaving false allegations on file shut down UAS Pacific and left its people unemployed, consistent with an intent to destroy Mr Barker to hide CASA’s failures?
Ms Spence: As I said, I do not accept the way in which you have presented it. We’ve had ongoing engagement with Mr Barker. I know that anything I say he will disagree with, but we’ve looked at these issues very seriously, and we’re looking into those areas where we have identified potential less-than-appropriate behaviour. But I do not accept the way you’re describing how those events occurred within the organisation.
Senator ROBERTS: How can anyone trust CASA? We have so many complaints, serious complaints, from people in the aircraft industry about CASA—CASA’s lack of ethics, violation of ethics, violation of laws, violation and abuse of authority and misplaced public faith.
CHAIR: We might take that as a statement.
Senator ROBERTS: It is a statement.






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