[5] A cruising speed of 165 miles per hour (266 km/h), they could climb to 8,000 feet (2,400 m), and had retractable undercarriage, variable pitch propellers, and landing flaps.

[6] Prior to the crash, the pilot Boyden and the airline's managing director had discussed the purpose of fitting a radio for emergencies, which was infant technology at the time.

[7] It was noted the pilots only had basic proficiency in Morse code, and weather reports might have to be transmitted as slow as five words per minute.

[11] Sister Stinson aircraft VH-UKK also left Archerfield on Saturday morning and unsuccessfully checked the McPherson Range area.

The aircraft was heard by people in Lamington and Hill View areas south of Beaudesert, Queensland at approximately 1:40 p.m. on Friday, 19 February 1937.

After reported sightings of the aircraft in New South Wales proved to be false, Bernard O'Reilly believed it must have had insufficient height to clear the mountains and subsequently crashed somewhere in the McPherson range.

[1][2] Another passenger, James Westray, aged 25 from London, had received major burns and other minor injuries in the accident and left to find help the morning after the crash, but died after he fell over a cliff.

Crew The Air Accidents Investigation Committee found 'the machine was swept down by a down current', and the Civil Aviation Department control officer, Archerfield Aerodrome stated 'Knowing Pilot Boyden, I will say that he was not negligent'.

The airline's flight superintendent discussed the altimeter, discounted the suggestions of the two surviving passengers as lacking experience to determine the aircraft's flying height, and believed the crash cause was 'an abnormal down current of air'.

[21] The coroner Mr J. J. Leahy, while not empowered under the statute to make any findings, noted the airline company had a very good and comforting flying record, 'tragic fatalities should be awaited to provide generating reasons for the institution of improvements to safeguard human life', and the authorities if studying the evidence presented to the inquiry, A plaque is at the incident site.