Axel Wegener posted in Air Operations
1 year ago
Public
Contingency fuel - what is it meant for, related to phases of conducting a flight? Or more specific: It is calculated as percentage of trip fuel and was formerly named 'inflight reserve', but is it allowed to be used prior TakeOff - eg. during Taxi? And where the regulation is layed down in details (965 searched already)?
The answer might be a combination of some points of the 965.
"taxi fuel/energy that shall not be less than the amount expected to be used prior to take-off;" and "contingency fuel/energy that shall be the amount of fuel/energy required to compensate for unforeseen factors;"
Even though there are various ways to calculate taxi and contingency fuel, the word "shall" is self-explanatory. They have different purposes.
In between I've found in ICAO Annex 6, Part I, 4.3.6.3A and ICAO DOC 9976 a clear statement that the contingency can also be used prior T/O, e.g. for unexpected taxi time.
Thanks for your answer.
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