AI.IV.A.K1FAA-S-ACS-25 · Nov 2023Knowledge
Purpose of the maneuver.
Purpose of the maneuver.
Bottom line
A rejected takeoff should be perceived as an emergency. V1 is the maximum speed by which a rejected takeoff still assures a safe stop within the remaining runway or runway and stopway. V1 is also the minimum speed which assures a takeoff can be safely completed within the remaining runway, or runway and clearway, after failure of the most critical engine at the designated speed.
Key numbers
| Number | What it means |
|---|---|
| 80 knots and below | Low-speed regime |
| 100 knots and above | High-speed regime |
| approximately 2 seconds | Reduced V1 recognition time |
FAA references
- AFH ch. 16 (pp. 16-15–16-16) — FAA-H-8083-3C
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