An answer to the question posed by Death Pencil in post #1 is inferred in CAO 20.1.7 and 20.1.7b. These refer you to the AFM data. I am only passing familiar with the little a/c but seem to recall landing climb data there somewhere, but is definitely part of RPT ops manuals and they require the PIC to ensure that the a/c planned LW is not above that which allows certified approach climb and landing climb gradients under existing conditions.
A close friend used to fly death pencils and always needed to ensure enough water meth was on board for a G/A prior to an approach into YARM in summer. This required a lot of careful management some days she said.