An instructor and a student pilot undergoing a check flight prior to undertaking a commercial pilot licence flight test were on-board an Aquila training aircraft when it collided with the ground shortly after departing a private airstrip at the Coombing Park property, south of Orange, on November 4.

The investigation update notes that the aircraft impacted the bank of a small dam, located on rising terrain about 600 metres beyond the end of the runway and about 30 degrees to the left of the runway centreline.

ATSB Acting Director of Transport Safety Kerri Hughes, said the wreckage has been examined and witnesses interviewed, with personal electronic devices and aircraft components also retrieved from the accident site.

"On-site examination of the aircraft's flight controls, engine and structure did not identify any pre-existing faults or failures," she said.

"In addition, evidence of fuel spillage at the accident site indicated that the aircraft had fuel onboard, while the presence of fuel in the fuel filters indicated the engine had fuel supply at the time of the accident."

The investigation update also notes that the recorded weather at nearby Orange Airport at the time of the accident included visibility of greater than 10 kilometres with no cloud detected, and an 11-knot wind from the west.

Ms Hughes noted the progress update does not include any safety findings or analysis, which will be detailed in the investigation's final report.

"As well as analysis of electronic data from the pilot's personal electronic devices and considering witness information, the ATSB will also examine a number of recovered aircraft components and analyse the aircraft's maintenance history, weight and balance, and performance," she said.

"The ATSB will also examine flight planning for the accident flight; the operator's policies and procedures; and review pilot qualifications, experience and medical information."

A final report will be released at the conclusion of the investigation.