I assume that for "water landing" an airplane should be configured for the lowest possible stall speed, and then flown to that speed before impact to minimize the energy to dissipate on impact.
- What is that configuration for a plane like the A320? E.g., full flaps? Was UA1549 so configured?
- How close did UA1549 get to the stall speed before impact? If I understand this answer then the A320's fly-by-wire protection would not allow a pilot to stall the airplane, meaning that the Pilot Flying could pull full aft to nail that speed (without either pilot calling airspeed to avoid a stall, which I assume would be the procedure for a plane without a self-protection computer).
- Was the ideal pitch for a power-out water landing known by the plane and/or the pilots? Normally we "pitch for speed," and it would seem an unlikely coincidence for the stall pitch to match the ideal impact pitch. Which pitch was higher?
- If impact pitch was higher did the Pilot Flying have to account for this, flying above stall speed in order to permit an increase to impact pitch immediately before impact?