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:
- For short-field takeoffs, flaps must be set to the aircraft's Pilot's Operating Handbook (POH)/Aircraft Flying Manual (AFM) specified position *before* the takeoff roll, not added during, as appropriate flap settings provide more lift than drag.
- Strict adherence to the aircraft's POH/AFM is paramount for all takeoff procedures, including flap settings and speeds (VX, VY), as these manufacturer-established guidelines ensure optimal performance and safety.
- Proper short-field takeoff execution involves consulting performance charts, adding a 50 percent safety margin, utilizing the full runway, applying maximum power against brakes, rotating at the correct speed, and pitching for VX to clear obstacles before transitioning to VY and incrementally retracting flaps.
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