| Swiss
Helicopter
History
by Markus Herzig |
HB-YAD |
 |
 |
| HB-YAD
at Gruyeres
Photo by Daniel Burgunder © Sep-75 |
The
swiss built SD-90
Photo by Jean-Claude Cailliez © 80s |
| 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 |