Question: When departing on a short runway—and since flaps produce drag—would it be wrong to wait until you have “enough” speed and then deploy flaps?
Answer:
Should You Add Flaps Mid-Takeoff on a Short Runway?
A CFI says it’s best to fall back on the pilot's operating handbook.
Key Takeaways:
- Attempting to deploy flaps *during* a short-field takeoff roll after gaining speed is incorrect and potentially dangerous; aircraft procedures dictate flaps must be set *prior* to the departure roll.
- Flaps, when used correctly at specified settings (typically less than half), generate more lift than drag, which is why manufacturers prescribe their pre-takeoff use for optimal short-field performance.
- Always adhere strictly to the aircraft's Pilot's Operating Handbook (POH)/Aircraft Flying Manual (AFM) for short-field takeoff procedures, including initial flap settings, full runway utilization, pitching for Vₓ to clear obstacles, and then transitioning to Vᵧ before incrementally retracting flaps.
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