We’re still collecting data for this aircraft. Routes appear once we’ve seen it fly enough times.
The Board determined that the probable cause of the accident was the "inadvertent actuation of the wing flaps to the full 35° 'down' position during the take-off run, thereby rendering the aircraft excessively nose-heavy and uncontrollable." The Board found a contributing factor was the "absence of the required stop-spring on the flap control switch which was for the sole purpose of preventing inadvertent application of the 35° flap."
Sikorsky 44A · 11 fatalities