Siebel Si 204
utility transport aircraft by Siebel
The Siebel Si 204 is a small twin-engined transport and trainer aircraft developed in World War II. It was based on the Siebel Fh 104 Hallore. Originally designed in response to a German Ministry of Aviation development order for a small civil transport aircraft in 1938, it was eventually produced for the Luftwaffe.
Development and production
The Si 204 was planned as a small all-metal passenger aircraft with two crew and eight passengers for German airline Deutsche Luft Hansa (DLH). Development was initiated in 1938. The contractor was, as usual, the RLM, but the development was conducted in close collaboration between DLH and Siebel in Halle.
After the beginning of the war, the aircraft was redesigned as a trainer aircraft with a full "stepless" glass cockpit, as had been initiated with the He 111P in early 1938, with no separate flat windscreen for the pilot (much as almost all German bomber aircraft of the time were being designed), which seemed to be better for instrument flying in the Si 204's case.
The first two prototypes only were delivered as passenger aircraft with the old cockpit. The maiden flight of the first prototype was before September 1940, possibly on 25 May 1940, that of the second prototype before February 1941. The third prototype was redesigned as a trainer aircraft for instrument flying. As a result of this, the maiden flight was not earlier than the end of 1941 or the beginning of 1942.
“Siebel Si 204” enters the record as utility transport aircraft by Siebel. Crown Archives preserves that source wording while asking what Siebel, utility and transport can confirm, complicate or overturn.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jun 4, 2026. The linked authority identifier is Q1541280. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1938, 1940, 1941 and 1942.
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This entry incorporates text from “Siebel Si 204” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.