Which combination of flight conditions leads to Vortex Ring State?

• A. Descent rate greater than 300 fpm, Speed below ETL (usually less than 30), 20-100% power
• B. Descent rate less than 200 fpm, Speed above ETL, 0-10% power
• C. Descent rate greater than 400 fpm, Speed above ETL, 0-10% power
• D. Descent rate greater than 1000 fpm, Speed below ETL, 0-5% power

Answer: (A)