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:
- It is incorrect and potentially disastrous to deploy flaps during a short-field takeoff roll; always follow the aircraft's Pilot's Operating Handbook (POH/AFM) for pre-set flap configurations.
- Flaps, when set to less than half of their available travel, generate more lift than drag, which is why the POH/AFM specifies their appropriate setting *before* commencing a short-field takeoff.
- For a short-field takeoff, consult performance charts, add a 50% safety margin to the calculated distance, configure flaps as per POH/AFM *before* takeoff roll, and then rotate at the correct speed to climb at VX.
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