Standard takeoff minima are one statute mile for aircraft having two engines or less and one-half statute mile for aircraft having more than two engines. Specified ceiling and visibility minima will allow visual avoidance of obstacles during the initial climb at the standard climb gradient.

Under FAA Part 91 (General Aviation), there are technically no takeoff minimums; a private pilot can legally attempt a takeoff in zero visibility, though it is considered extremely dangerous. However, for commercial operators (Part 121 and 135), the standard takeoff minimum for aircraft with two engines or less is 1 statute mile of visibility, and for aircraft with more than two engines, it is 1/2 statute mile. In 2026, many airlines utilize "Lower Than Standard" minimums if the runway is equipped with specific lighting (like Centerline Lights and Runway Remaining lights) and the crew is specifically trained. These can go as low as 500, 400, or even 300 feet RVR (Runway Visual Range). If the weather is below these specific RVR values, the aircraft must stay on the ground. These regulations are designed to ensure that if an engine fails during the takeoff roll, the pilot has enough visual reference to maintain directional control and safely stop the aircraft or continue the climb without hitting obstacles, making takeoff minimums a critical pillar of modern aviation safety.