The General Aircraft Monospar ST-18 Croydon during an early test flight in June 1936 bearing the “Class B” markings T-22

Further view of the Croydon during an early test flight from Hanworth.

Tne Monospar Croydon on a demonstration flight last week, with Flt. Lt. Schofield at the controls.
The aircraft seen a month later fully finished shortly before departing for Australia. Note the mass balance on the rudder.

The End: "... one of the hardest things I ever had to do was to leave the aircraft stranded, through no fault of its own, standing up like a monument in the clear atmosphere until the sea eventually claimed it."
Marooned. The last photograph taken of the Croydon shortly before the tide claimed it for ever, Seringapatam Reef, October 7, 1936.

SYMMETRY: The control and instrument layout of the Monospar S.T.18. It will be seen that some of the more important instruments are on the first pilot's dashboard, while the Sperry panel is mounted in the centre.
The roomy pilot’s cockpit of the ST-18 provided new standards of comfort.

The roomy passenger cabin of the ST-18 provided new standards of comfort.