Originally Posted by
Rananim
What can we reasonably infer from the write up?a)That the UAS was not detectable on the takeoff roll(otherwise they would have aborted).
Unfortunately you can’t make that assumption - humans sometimes don’t act reasonably. In the recent Malaysian Airlines incident at Brisbane (pitot covers left on), both pilots observed red speed flags on their PFDs during the takeoff roll (didn’t say or do anything), the CPT (PM) called the 100 knot airspeed check based upon ground speed and they got airborne with no valid airspeed indications.