Tranche 1 Transport Layer is SDA’s initial operational tactical communications mesh, providing low-latency data transport and regional persistence from LEO.
4 forecast rows linked to this constellation.
| Forecast entry | Year | Satellites | Orbit | Vehicle | Manufacturer | Mission | Launch likelihood |
|---|---|---|---|---|---|---|---|
| SDA T1TL-D |
42 linked spacecraft shown.
| Spacecraft | Status | Orbit | Launch date |
|---|---|---|---|
| Praetorian SDA-601 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-602 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-603 |
| 2026 |
| 21 |
| LEO |
| Falcon 9 FT5 |
| York Space Systems / Lockheed Martin / Northrop Grumman |
| Other |
| 4.85 / 5 |
| SDA T1TL-E SDA T1TL-E (x21) | 2026 | 21 | LEO | Falcon 9 FT5 | York Space Systems / Lockheed Martin / Northrop Grumman | Other | 4.85 / 5 |
| SDA T1TL-F SDA T1TL-F (x21) | 2026 | 21 | LEO | Falcon 9 FT5 | York Space Systems / Lockheed Martin / Northrop Grumman | Other | 4.85 / 5 |
| SDA Tranche 1 Transport Layer A | 2026 | 21 | LEO | Falcon 9 FT5 | York Space Systems / Lockheed Martin / Northrop Grumman | Other | 4.85 / 5 |
| active |
| LEO |
| Sep 10, 2025 |
| Praetorian SDA-604 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-605 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-606 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-607 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-608 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-609 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-610 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-611 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-612 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-613 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-614 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-615 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-616 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-617 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-618 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-619 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-620 | active | LEO | Sep 10, 2025 |
| Praetorian SDA-621 | active | LEO | Sep 10, 2025 |
| SDA-1664 | active | LEO | Oct 15, 2025 |
| SDA-1665 | active | LEO | Oct 15, 2025 |
| SDA-1666 | active | LEO | Oct 15, 2025 |
| SDA-1667 | active | LEO | Oct 15, 2025 |
| SDA-1668 | active | LEO | Oct 15, 2025 |
| SDA-1669 | active | LEO | Oct 15, 2025 |
| SDA-1670 | active | LEO | Oct 15, 2025 |
| SDA-1671 | active | LEO | Oct 15, 2025 |
| SDA-1672 | active | LEO | Oct 15, 2025 |
| SDA-1673 | active | LEO | Oct 15, 2025 |
| SDA-1674 | active | LEO | Oct 15, 2025 |
| SDA-1675 | active | LEO | Oct 15, 2025 |
| SDA-1676 | active | LEO | Oct 15, 2025 |
| SDA-1677 | active | LEO | Oct 15, 2025 |
| SDA-1678 | active | LEO | Oct 15, 2025 |
| SDA-1679 | active | LEO | Oct 15, 2025 |
| SDA-1680 | active | LEO | Oct 15, 2025 |
| SDA-1681 | active | LEO | Oct 15, 2025 |
| SDA-1682 | active | LEO | Oct 15, 2025 |
| SDA-1683 | active | LEO | Oct 15, 2025 |
| SDA-1684 | active | LEO | Oct 15, 2025 |