All STP level 15 jumps require ground refresher training.
| License Held | Time Since Last Jump | Must Do |
|---|---|---|
| Student | 30 days | STP – 15 or last passing dive flow |
| A License | 60 days | Coach Jump |
| A License | 90 days | STP – 15 |
| B License | 90 days | Coach Jump |
| B License | 180 days | STP – 15 |
| C License | 180 days | Coach Jump |
| C License | 2 years | STP – 15 |
| D License | 180 days | Coach Jump |
| D License | 3 years | STP – 15 |