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To Intruder
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Thankyou for your response. Regarding the extra details you want to know:
- Departure airport is the only option.
- The factored landing distance equals the runway length at Max Landing Weight.
- Why 1.67 % is used? It's a dispatch safety figure for landing and thats what the discussion is all about that, "Can it be used once the A/C is airborne?"
- Unfactored landing distance of 5700 feet which I mentioned in the example is with operational reversers and autobrakes.
So with this extra info do you still hold your answer of Landing and not waiting? Thanx.
I do not normally consider Dispatch safety factors once airborne. The exception is fo a planned redispatch, where Dispatch rules still apply.
I have seen 15% and 40% runway length factors usded in various scenarios. This is the first time I have seen 67% used.
If the 5700' landing distance includes air distance to touchdown point and uses normal (not max) autobrakes, I would still consider landing. I would still check the emergency max landing weight for the airport and compare that to the TO (or current) weight. That will give another indication of relative performance limitations.