A design by Ulf Hallvig, featuread in the magazine "Teknik för Alla".
| Name: Tfa:s S-etta | Alternative name: |
| Plan-ID (S-O L. numbering): B066,B133 | Owner: SMOS |
| Designer: Ulf Hallvig | Drawn by: |
| Year designed: 1942 | Wingspan (mm): 920 |
| Category: Klass S1 | |
| Sources: Tfa | |
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Changed date: 2015-12-26
