The Phenom 100 has an aggressive "stick pusher" (not just a stick shaker) as part of the stall protection system.
The pusher if activated would have automatically pushed the yoke forward with > 100 lbs of force.
Some interesting notes:
- Lowest recorded speed: approx. 88 kts
- At that point, "large excursions in pitch and in roll" were observed
- About 2 seconds later, the throttles were advanced, and engines responded
- Aircraft was in landing configuration (flaps extended, landing gear down)
- According to AWST, the Phenom 100 has a stall speed of 77 kts in landing config
- Pilot had ATPL & CFI ratings with 4,500 hrs
Latest NTSB briefing (20 mins):