Intersection Takeoff Rules
Under the new rules for questions I think this belongs here not in Tech Log.
Can anyone point me at the place in the regulations (or advisory material) that specifies the manner in which an intersection takeoff is assessed for distance and slope. It seems logical that for an intersection takeoff, I pretend that the runway behind me doesn't exist, and I use the slope and distance for the runway in front of me for performance purposes. But a quick scan through the FARs keeps turning up the phrase "length of the runway" without (apaprently) defining it as "length of the runway in front of me". Similarly the landing regs keep mentioning "effective length" and I can't find any specifics for that term either.
Any help gratefully received - trying to find a regulatory justification for the common-sense approach.