This was apparently the very first helicopter exported by Bell, making Ostermans the first commercial helicopter operator outside the USA in February 1947. It was at first unofficially marked SE-AZT. As in other countries, the helicopter was seen as a possible mail vehicle and one of the first cargoes was a few letters delivered to a lighthouse keeper. SE-HAA ditched and sank in the harbour of Stockholm on 20 May 1949. Photo from: Tekniska Museet