Regional Express has responded to claims of safety mismanagement, which have called for the grounding of its entire fleet.
The regional airline has been the subject of media reports suggesting an employee's concern for the safety of an aircraft was repeatedly ignored.
An engineer was allegedly victimised by Rex after reporting a problem with a propeller.
The reported problem related to the same propeller safety issue that contributed to an incident over Sydney in 2017.
The accusations were made against Rex after a 17-page report was leaked to the press.
The Australian Government's Civil Aviation Safety Authority have accused the Australian Licensed Aircraft Engineers Association of leaking the report.
A spokesperson for the trade union denied these claims on Monday.
Rex released a statement which claimed CASA was behind the leak.
Rex's chief operating officer Neville Howell said CASA was to blame for the bad press, not the airline's safety record.
"Some are now taking the despicable and cowardly approach of launching anonymous malicious attacks on Rex in the press," he said.
Mr Howard said Rex believed its safety culture was second to none.
DO YOU WANT MORE DUBBO NEWS?
- Receive our free newsletters delivered to your inbox, as well as breaking news alerts. Sign up below ...