| Lac Sébastien Water Aerodrome | |
| Tc: | CTD3 |
| Type: | Private |
| Operator: | Air Saguenay (1980) Inc Martial Tremblay |
| City-Served: | Saint-David-de-Falardeau, Quebec |
| Location: | Lac Sébastien, Quebec |
| Timezone: | EST |
| Summer: | EDT |
| Elevation-F: | 580 |
| Coordinates: | 48.6517°N -71.1458°W |
| Pushpin Map: | Canada Quebec#Canada |
| Pushpin Label: | CTD3 |
| Pushpin Map Caption: | Location in Quebec |
| R1-Number: | n/a |
| R1-Length-F: | n/a |
| R1-Length-M: | n/a |
| R1-Surface: | Water |
| Footnotes: | Source: Water Aerodrome Supplement |
Lac Sébastien Water Aerodrome is located 2NM north of Saint-David-de-Falardeau on Lac Sébastien, Quebec, Canada. It is open from May until October.