| Swiss
Helicopter
History
by Markus Herzig |
HB-YAD |
| Stierlin-Devaud SD-90 | s/n: 1 | Built: 1971 | s/n History: HB-YAD |
| Operator / Owner | Registered | Cancelled | Remarks |
| Devaud Michel | 1972-05-09 | 1989-04-11 | preserved in Switzerland |
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| HB-YAD of Michel Devaud at Gruyeres - Photo by Daniel Burgunder © Sep-75 |