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From 8 November 2018, 'additional fuel' will be introduced to simplify the planning requirements for fuel contingencies.
Prior to the rule change, pilots and operators had to calculate fuel to accommodate two contingencies; engine failure and depressurisation, each with different reserve requirements.
The new rules make this calculation simpler. Now the 'additional fuel' calculation is based whichever of the contingencies requires the greater amount of fuel plus a reserve fuel of 15 minutes plus an approach and landing allowance.
Like the contingency fuel it replaces, the planning for additional fuel depends on the aircraft being a pressurised and/or multi-engined aircraft.
Explaining the rules
We have released guidance material to help explain how the changes work in practice.
For private pilots operating under visual flight rules (VFR) only, there’s a draft of the fuel pages that will appear in the revised Visual Flight Rules Guide (VFRG).
CAAP 234-1(2) covers aircraft fuel requirements and sample calculations:
There is also guidance for preparing or amending operations manuals – revised pages of the advisory material as CAAP 215-1(3):
Please note: This material is in 'advanced copy (not yet in force)' form. It is anticipated the amendment as CAAP 215-1(3) will be issued on 8 November 2018, incorporating the fuel related changes.