List of GPS satellites
Satellites by block
Columns: Block | Launched | Operational | Not usable | Retired | Launch Failures
Block I | 11 | 0 | 0 | 10 | 1 | Block II | 9 | 0 | 0 | 9 | 0 | Block IIA | 19 | 8 | 1 | 10 | 0 | Block IIR | 13 | 12 | 0 | 0 | 1 | Block IIRM | 8 | 7 | 0 | 1 | 0 | Block IIF | 4 | 4 | 0 | 0 | 0 | Total | 64 | 31 | 1 | 30 | 2