There are too many “what ifs” to carry sufficient fuel for all eventualities. 10 minutes spare fuel makes me no happier than a spare one hour or minus five minutes. Either way, Plan A, B and possibly C will have been running from before departure and kept up to date with changing circumstances as your flight progresses. What is important is that you understand what is still viable and still sensibie as your fuel state changes. As fuel is burnt over time you will end up having to commit to something but that does not necessary mean a diversion.
PM
Last edited by Piltdown Man; 4th Apr 2018 at 21:36.