| Registration Letters | OY-XMN |
| Manufacturers's serial number | 21129 |
| Year Built | 1982 |
| Registration Date | 1982.10.27 |
| Previous Identities | |
| Cancelled | 1995.03.07 |
| Fate | SE-UMN |
| Type Designation | Schleicher ASK 21 |
| Manufacturer | Schleicher Segelflugzeugbau, A. |
| CoA | S.1556 |
| Issued | 1982.10.27 |
| Comp. No. | MN |
| Seq. No. |
| Builder | Schleicher Segelflugzeugbau, A. |
| Place | Poppenhausen, W.Germany |
| COR | S.02118 |
| Issued | 1982.10.27 |
| Cancelled | 1995.03.07 |
| Owner | Herning Svæveflyveklub |
| Town | Herning |
| User |
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