Gryphon; “
Are we now looking for a different In-flight Landing distance concept (ALD) …”
The Operational Landing Distance (OLD) concept is designed to replace the previous ‘actual landing distance’ advisory tables. There is a brief explanation in
http://www.multimedia-support.net/fl...ocs/21-4-1.pdf
Airbus also refers to Factored OLD (FOLD) which appears to include a further 15% margin; this and other assumptions should be carefully checked on the chart to be used.
Even with the revised distances of OLD / FOLD, crews should still assess the landing conditions and include further factors for the accuracy of the runway condition report, higher approach speeds, threshold crossing height, and the degree of use of brakes and reverse.
Also see
http://www.ukfsc.co.uk/files/Safety%...ust%202010.pdf And
Safety First 12