A320 landing distance without failure

[simyoke]

Hello, folks!
While going through QRH the other day, I realized that the second note seems a bit strange for "LANDING DISTANCE WITHOUT FAILURE" tables.


Each LANDING DISTANCE WITHOUT FAILURE table has two notes, one of which is related to WEIGHT CORRECTION;


For Dry runway,
(2) Weight correction: if CONF FULL, subtract 10ft per 1klb below 150klb.

For Good runway,
(2) Weight correction: if CONF FULL, subtract 20ft per 1klb below 150klb.

For Good to Medum runway
(2) Weight correction: if CONF FULL, subtract 20ft per 1klb below 150klb.


Let's say that we are using autobrake low with flaps full, then the reference distance is same for all three runway conditions mentioned above.


If you follow the aforementioned note, then Good to medium and
Good runways produce a shorter landing distance than Dry runway.


Dry runway is supposed to give us shorter landing distance than Good or Medium, or so my common sense tells me.