* Overly-fast touchdown (Warsaw)
* Unknown (to me) + pilot handling (Bacolod)
PBL,
The overly fast touchdown in Warsaw was not the issue per se.
What happened is that the landing was too gentle to apply the required pressure on the main gear oleo struts in order to get the flight logic "understand" that the aircraft had actually touched down.
Automatic braking systems began to work only at the recorded contact of the left main gear : the spoilers and the reverse thrusts began to operate as required, but with a delay.
Furthermore, the wheel brakes began to operate about 4 seconds later, as they were dependent upon the wheels rotating at a speed equal or higher than 72 kts, condition that was not met earlier in the rollout.
The report stated at the time that " in emergency, the crew is unable to override the lock-out and to operate ground spoilers and engine thrust reversers."
Regarding Bacolod, as far as I know there was a glitch in the computer that prevented one of the engines to be set to idle. By the time the crew shut down the erratic engine, the flight systems prevented the automatic braking systems to operate normally.