Freefall Drift=Average wind during freefall/duration of freefall x 5280 feet
Example:
| Altitude | Velocity(knots) |
| 3000 | 15 |
| 6000 | 22 |
| 9000 | 28 |
| 12000 | 35 |
100 / 4 = 25 knots25 knots/60 seconds x 5280 feet = 2,165 feetRounded to 2,000 feet of approximate Freefall Drift