With most small or mid sized jets the V1 is calculated on a balanced field and possibly based on brake energy limits, not runway distance available. On a short runway with one speed V1/Vr which will be at the end of the TORA then the aircraft will never stop in the clearway if the stop is initiated late in the take off run
As the aircraft is certified to FAR 25 I'd have thought all take offs would be planned to be able to stop with failure at the EF point and the first stopping action taken at V1 (§25.109 Accelerate-stop distance), or be able to continue the take off with one engine out if the failure occurs at a point where the first stopping action would be post V1 (§25.111 Takeoff path).
Will this incident prompt a revision of take off calculation procedures for small or mid sized jets?
Are small and mid size jets certificated to FAR 25 given some slack in application of these procedures?
The unmeasurable quantity here is what is normal acceleration
You have no way of knowing, some military aircraft have a system that under X conditions it will take Y seconds to accelerate to Z knots, another system was Z knots by a certain distance.