Built into the takeoff performance planning data ( aka the Airfield Analysis ) there's an allowance as follows (depending under which regulatory authority ones opperating) for recognition of a problem that would require an RTO and for the instigation of the said same RTO:
- FAR - 1 second.
- JAR - 2 seconds ( 1" for recognition that there's a problem, and a further 1" for instigation of the RTO)