The Ö 1 was operated by the Flygvapnet as its advanced trainer until the mid-1930s. This example was built in 1928 and is the only one left of the original 24 produced.

The Tummelisa was a Swedish design training aircraft. It was in use between 1927 and 1934.

1928-built advanced trainer built at Malmen

First flown in 1920, the FVM Tummelisa (Thumbelina, the female counterpart of Tom Thumb) served in the Swedish air force as a single-seat trainer until 1935. The factory designation was E.1. In 1926 it was given the military designation Ö1 for an 'exercise aircraft' or advanced trainer. This airframe belonged to a second batch built in 1928 and made its last flight in 1962.

This is the last survivor of 28 Tummelisa advanced trainers built by the Centrala Flygverkstader Malmen (CFM) during the early 1920s. They served the Swedish AF between 1921 and retirement in 1935. This example was originally serial Fv656.