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Old 1st Nov 2021, 03:56
  #28 (permalink)  
Fieldmouse
 
Join Date: Jun 2011
Location: Bradd
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Originally Posted by 43Inches
I put the tree data as akin to having schedule figures at a station as purely a departure time from the first station and the passenger has to work out themselves at current speed and estimated stoppage time at intermediate stations what time their train will arrive. Ie I have some data, but not enough so much of what I'm operating to now is assumption or guesswork, Is the aerodrome open or closed, are the runway STODA distances affected or not? Is it safe? *whirs up the dental drill*
I hear ya.
Generally by the time you do the math it refers to a tree you are 1000ft clear of on a bad day. Unless you are in an Antonov and lose one or two on rotation and its 40C.
The aerodrome should publish an amended STODA if anything changes by 33ft decrease or 98ft increase in DD's or a gradient change above 0.05% - ERSA intro 34. but that's about as much guidance as there is.
You have to assume if new STODAs aren't published it is below these criteria. But assumption has killed the occasional cat.
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