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Appendix 4 APPENDIX 4. TAKEOFF PERFORMANCE BASED METHOD EXAMPLE, continued whichever is greater, which can be accepted without curtailments or procedural adjustments for OBWBS accuracy. OBWBS operational accuracies that result in greater than ± 1.5 knot error or change in V1 or V2, or more than a 100 feet increase in takeoff or accelerate-stop distance, whichever is greater, require appropriate curtailment for OBWBS accuracy.
b. The analysis method shown in this example can be readily modified to consider the effects of pressure altitude, outside air temperature, winds, and runway slope, as appropriate, when determining the relationship of change in weight to change in takeoff/accelerate-stop distance.
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