gnadirs;
"DRY RWY: reverse thrust is not taken into consideration hence no penalty shall be included in the calculation in case of a reverser inop.
WET RWY: reverse thrust is taken into consideration for TO and LDG."
Not on the Airbus or Boeing.
Although there are considerations when using takeoff and landing data for contaminated runways when using contaminated runway speeds. But "contaminated" doesn't mean light rain. Post #28 provides the QRH Landing Data for Config FULL. The chart displayed is actually the "Autoland Landing Distance with Autobrake" Chart. You can see in the right-hand columns under "Corrections (%) on landing distance, the 2nd column is "2 Rev. Op." with percentages to subtract from the appropriate landing distance columns on the left (under "Actual Landing Distance (Feet)". Reverse is not taken into account in any of the circumstances listed. The extreme example illustrates this...under "Ice" in the Runway Condition column, the "2 Rev. Op." column shows -23%.