Section 21 (2) of the Transport Safety Investigation Act 2003 (TSI Act) empowers the Australian Transport Safety Bureau (ATSB) to discontinue an investigation into a transport safety matter at any time. Section 21 (3) of the TSI Act requires the ATSB to publish a statement setting out the reasons for discontinuing an investigation.

On 6 October 2015, the ATSB commenced an investigation into a collision with terrain involving a Cessna 172, registered VH-IMY, 27 km NW of Landor Racecourse, Western Australia, which occurred on 3 October 2015.

The ATSB was unable to establish sufficient information to draw any specific conclusions regarding the circumstances of the accident, but is satisfied that there are unlikely to be any broad systemic safety issues associated with the accident that could affect future transport safety. On that basis, the ATSB determined that there was limited safety benefit in continuing to direct resources at this investigation when compared with other priorities and elected to discontinue this investigation.