What is the acceptable time window for WDIs thrown from 3000 feet AGL?

• A. 1:15-2:15
• B. 2:15-3:15
• C. 3:15-4:15
• D. 4:15-5:15

Answer: (B)

The acceptable time window for Wind Drift Indicators (WDIs) thrown from 3000 feet Above Ground Level (AGL) is indeed 2:15 to 3:15. This timing is critical because it factors in the descent rate of the WDI, which falls at a predictable rate depending on environmental conditions such as air density, wind speed, and the specific deployment technique used.

Utilizing the correct time window ensures that the WDI will provide accurate information about wind conditions at the landing zone. When a WDI is deployed, it falls in a manner that conveys how far the wind will drift the parachutist or cargo as they descend. If the timing is incorrect, the WDI will not adequately represent the wind conditions at the target elevation, potentially leading to misguided deployment decisions.

Understanding this answer facilitates the effective use of WDIs in planning and executing jumps since accurate wind readings can significantly affect jump precision, safety, and mission success.