G,
Does CASA still use the old P Charts for TKOF and LDG in light aircraft???
They had a safety factor % built in based on the aircraft's MTOW, that % scale IIRC is in a CAO concerning Performance.
IF that scale and mandatory safety buffer is no longer legally required by CAO or CAR then you can use the foreign flight manual charts if they are what is approved by CASA for that particular aircraft.
I would, from experience, however recommend retaining that safety buffer.
ALL those Performance charts are compiled by the manufacturers test pilots with brand new aircraft and new engines using the specified criteria on the chart.
Your technique would need to match those used exactly in order to get the stated figures, again with a brand new aircraft.
For eg, in light aircraft, the landing distance charts usually specify passing through 50' height at idle power, on speed, over the threshold. (ie a Glide Descent) This then often requires a more pronounced round out and flare than a flatter approach with some power on.
How do you normally do it, exactly like that???
Read those charts very carefully.
Even turboprop and jet aircraft engaged in commercial ops use a runway safety buffer, again they are stated in the CAO's.
Think carefully and fly smart and safe.
