Often had this discussion with Ops. etc. When planning round trip fuel I calculate:
Full flight plan requirement for the INBOUND sector,
+
OUTBOUND burn and Taxy
+
OUTBOUND contingency.
Never found a company fuel policy or Flight Dispatcher that wants to include the OUTBOUND contingency.
Take the example of PER -SIN-PER and SIN advise that, for example, due fuel contamination no uplift fuel available for regional flights able to carry round trip. B746/747 gets airborne from PER on a four hour sector and due preceding and crossing traffic never makes optimum cruise and due to the lower levels burns all of the outbound contingency. On arrival SIN this aircraft is going to have to uplift fuel to stay legal if it didn't plan for and carry outbound contingency fuel.
Before you post your response please look at your company fuel policy and see what they give as the numbers to be included when calculating round trip fuel, (excluding 'commanders discretion due unforseen' etc.) Hopefully times are changing.
