P.M. angående observation av s.k. spökbomb

This memorandum, dated August 21, 1946, was authored by Sören Lindner, an engineer at FOA 1, regarding a sighting of a so-called 'ghost bomb' (spökbomb). Lindner reports that on Sunday, August 11, 1946, while on vacation in the Stockholm archipelago on the northwest part of Arholma, he observed an object in the air at 20:40. The object was seen coming from the Åland Sea (Ålands hav) from an east-southeast (OSO) direction, heading toward Björkö. Lindner describes the object as a spindle-shaped body without wings, emitting a strong white flame from the rear that was approximately half the length of the object itself. The object produced a hissing sound. He estimated the object's altitude to be between 200 and 300 meters and calculated its speed at approximately 100 meters per second. The object was observed for slightly over five seconds before it disappeared into the sound between Björkö and Arholma. The final observation was made as the rear flame appeared to descend vertically against a background of trees. Lindner estimated the object's length to be one meter at that altitude. The weather at the time of the observation was described as fairly cloudy.