The Bureau of Infrastructure Transport and Regional Economics (BITRE) study into general aviation has been delayed until 31 August.
BITRE was initially scheduled to complete the report by 30 June.
According to a spokesperson from the Department of Infrastructure and Regional Development, the final report has been delayed to "ensure that BITRE receives input from a few remaining key stakeholders and to incorporate the upcoming finalisation and release of general aviation statistical information."
Minister for Infrastructure and Transport, Darren Chester, announced the GA study in October last year, saying, "I am keen to remove barriers to growth in this vital part of the aviation industry including reducing costs and regulatory burden. General aviation has a rich history in Australia and I'm confident it can have a prosperous future.
"This study will help get the public policy right to support growth in the sector."
The BITRE report, when presented, is expected to cover a range of issues including influences on GA, trends, economic, demographic and regulatory factors behind the trends, as well as outlining the key challenges facing the industry.