| Name: URA 4 | Alternative name: Perfekt |
| Plan-ID (S-O L. numbering): | Owner: SMOS |
| Designer: Sven Salonius | Drawn by: |
| Year designed: 1945 | Wingspan (mm): |
| Category: Klass S3 | |
| Sources: Oldtimer 2/2009 | |
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Changed date: 2014-08-23
