ED Decision 2022/005/R
BASIC FUEL SCHEMES WITH VARIATIONS — ISOLATED AERODROME — POINT OF NO RETURN
(a) Unless destination alternate fuel is carried, the operator should use a destination aerodrome as an isolated aerodrome if the alternate fuel plus the FRF that is required to reach the nearest adequate destination alternate aerodrome is more than:
(1) for aeroplanes with reciprocating engines, the amount of fuel required to fly either for 45 minutes plus 15 % of the flying time planned for cruising, including FRF or for 2 hours, whichever is less; or
(2) for turbine-engined aeroplanes, the amount of fuel required to fly for 2 hours with normal cruise consumption above the destination aerodrome, including the FRF.
(b) If the operator’s fuel planning policy includes an isolated aerodrome, a PNR should be determined by a computerised flight-planning system and specified in the operational flight plan. The required usable fuel for pre-flight calculation should be as indicated in points (b)(1) or (b)(2), whichever is greater:
(1) the sum of:
(i) taxi fuel;
(ii) trip fuel from the departure aerodrome to the isolated aerodrome via the PNR;
(iii) contingency fuel that is calculated in accordance with the operator’s current fuel scheme;
(iv) additional fuel, if required, but not less than:
(A) for aeroplanes with reciprocating engines, the fuel to fly either for 45Â minutes plus 15Â % of the flight time planned for cruising or for 2 hours, whichever is less; or
(B) for turbine-engined aeroplanes, the fuel to fly for 2 hours with normal cruise consumption above the destination aerodrome, including the FRF;
(v) extra fuel if there are anticipated delays or specific operational constraints; and
(vi) discretionary fuel, if required by the commander; or
(2) the sum of:
(i) taxi fuel;
(ii) trip fuel from the departure aerodrome to the fuel ERA PNR aerodrome via the PNR;
(iii) contingency fuel that is calculated in accordance with the operator’s current fuel scheme;
(iv) additional fuel, if required, but not less than:
(A) for aeroplanes with reciprocating engines, fuel to fly for 45 minutes; or
(B) for turbine-engined aeroplanes, fuel to fly for 30 minutes at holding speed at 1Â 500Â ft (450Â m) above the fuel ERA aerodrome elevation in standard conditions, which should not be less than the FRF;
(v) extra fuel if there are anticipated delays or specific operational constraints; and
(vi) discretionary fuel, if required by the commander.
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