firstOperationalCrewFlightYear
P29511
predicate
Indicates the year in which the first operational crewed flight associated with the subject took place.
Sample triples (1)
| Subject | Object |
|---|---|
| Commercial Crew Program | 2020 → |
P29511
predicate
Indicates the year in which the first operational crewed flight associated with the subject took place.
| Subject | Object |
|---|---|
| Commercial Crew Program | 2020 → |