safetypee, I'm afraid its applicable to both FAA and EASA
In-flight assessment operational rules Current FAA and EASA rules make a generic statement regarding the need to assess landing performance in flight: “The commander must satisfy himself/herself that, according to the information available to him/her, the weather at the aerodrome and the condition of the runway intended to be used should not prevent a safe approach and landing”. No guidance is given on the criteria and factors to be taken into account for the determination of a safe landing distance.
One needs to immerse into materia in order to comprehend the full picture. It's a whole topic with airbus consisting of a whole ebook. If someone wishes to deepen the knowledge that's the way to go. All I wanna say is OLD is a realistic assessment of the landing performance on particular day, runway, aircraft status and landing method. What's the use of some unrealistic figures on a sunny day in TOU, if you're in the grass covered with snow in MAN? Whereas OLD gives you a good idea of where you'll end on that occasion. It's REALISTIC and that's all it matters.
