Design and Development
From late 1942, several RAF Sunderlands were stripped of their armament and fitted with bench-type seats. From early 1943, the aircraft gradually acquired civil markings and went into service with BOAC between Poole Harbour Dorset and West Africa. A BOAC Sunderland made a proving flight to Karachi in the Indian subcontinent in late 1943 to research future civil operations to India. These conversions were designated by Shorts as the Sunderland 3.
All the Sandringhams were civil conversions of former Royal Air Force Coastal Command Short Sunderlands. The Sandringham Mark 1 used Bristol Pegasus engines, while the later marks of Sandringham used Pratt & Whitney "Twin Wasp" engines. The conversions were carried out by Short and Harland Ltd at Belfast Harbour.
In 1963 an additional conversion of a former Royal New Zealand Air Force Sunderland V was carried out by Ansett with a 43-seat interior, although described as a Sandringham the Islander was a unique design.
Read more about this topic: Short Sandringham
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