(1)
for turbo-jet powered aeroplanes, within 60 % of the landing distance available (LDA); and
(2)
for turbo-propeller powered aeroplanes, within 70 % of the LDA.
(b)
For steep approach operations, the operator shall use the landing distance data factored in accordance with (a), based on a screen height of less than 60 ft, but not less than 35 ft, and shall comply with CAT.POL.A.245.
(c)
For short landing operations, the operator shall use the landing distance data factored in accordance with (a) and shall comply with CAT.POL.A.250.
(d)
When determining the landing mass, the operator shall take the following into account:
(1)
the altitude at the aerodrome;
(2)
not more than 50 % of the headwind component or not less than 150 % of the tailwind component; and
(3)
the runway slope in the direction of landing if greater than ±2 %.
(e)
For dispatching the aeroplane it shall be assumed that:
(1)
the aeroplane will land on the most favourable runway, in still air; and
(2)
the aeroplane will land on the runway most likely to be assigned, considering the probable wind speed and direction, the ground handling characteristics of the aeroplane and other conditions such as landing aids and terrain.
(f)
If the operator is unable to comply with (e)(1) for a destination aerodrome having a single runway where a landing depends upon a specified wind component, the aeroplane may be dispatched if two alternate aerodromes are designated that permit full compliance with (a) to (e). Before commencing an approach to land at the destination aerodrome, the commander shall check that a landing can be made in full compliance with (a) to (d) and CAT.POL.A.225.
(g)
If the operator is unable to comply with (e)(2) for the destination aerodrome, the aeroplane shall be only dispatched if an alternate aerodrome is designated that allows full compliance with (a) to (e).
CAT.POL.A.235 Landing — wet and contaminated runways
(a)
When the appropriate weather reports and/or forecasts indicate that the runway at the estimated time of arrival may be wet, the LDA shall be at least 115 % of the required landing distance, determined in accordance with CAT.POL.A.230.
(b)
When the appropriate weather reports and/or forecasts indicate that the runway at the estimated time of arrival may be contaminated, the LDA shall be at least the landing distance determined in accordance with (a), or at least 115 % of the landing distance determined in accordance with approved contaminated landing distance data or equivalent, whichever is greater. The operator shall specify in the operations manual if equivalent landing distance data are to be applied.
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本文鏈接地址：Annexes to the draft Commission Regulation on ‘Air Operations - OPS’(99)
