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An IFR flight with a jet from departure A to destination B applying the decision point procedure (DPP) is planned with a decision point DP and en-route alternate C.How much fuel has to be carried given the following information?

Distance A to B: 2 300 NM
Distance A to C: 1 300 NM
Distance A to DP: 850 NM
TAS: 470 kt
TWC: 32 kt
Fuel flow: 2 600 kg/h

  • A
    7 070 kg
  • B
    13 125 kg
  • C
    12 930 kg
  • D
    14 239 kg
Regulation (EU) No 965/2012
AMC1 CAT.OP.MPA.150(b) Fuel policy
PLANNING CRITERIA — AEROPLANES

(b) Reduced contingency fuel (RCF) procedure
If the operator’s fuel policy includes pre-flight planning to a destination 1 aerodrome (commercial destination) with an RCF procedure using a decision point along the route and a destination 2 aerodrome (optional refuel destination), the amount of usable fuel, on board for departure, should be the greater of (b)(1) or (b)(2):
Note: in this particular case, there is no need to perform (b)(2) calculations. As you can see, Destination C is only 1 300 NM – 850 NM = 450 NM away from the Decision point. It is very clear that a greater amount of fuel will be required for (b)(1).

(1) The sum of:
(i) taxi fuel; N/A
(ii) trip fuel to the destination 1 aerodrome, via the decision point;
Distance A - B: 2 300 NM
Ground Speed = TAS + Tailwind = 470 kt + 32 kt = 502 kt
Flight Time = 2 300 NM / 502 kt = 4.58 h
FF: 2 600 kg/h
  • Therefore, Trip Fuel = 4.58 h x 2 600 kg/h = 11 908 kg
(iii) contingency fuel equal to not less than 5 % of the estimated fuel consumption from the decision point to the destination 1 aerodrome;
DP – DEST 1 (B) = 2 300 NM – 850 NM = 1 450 NM
Flight time = 1 450 NM / 502 kt = 2.89 h
2.89 h x 2 600 kg/h = 7 514 kg
  • Contingency fuel = 5 % x 7 514 kg = 375.7 kg
(iv) alternate fuel or no alternate fuel if the decision point is at less than 6 hours from the destination 1 aerodrome and the requirements of CAT.OP.MPA.180(b)(2), are fulfilled;
As we calculated under (iii), in this case, decision point is 2.89 h from the destination 1 aerodrome (B), therefore, no alternate fuel required.

(v) final reserve fuel; N/A
“for aeroplanes with turbine engines, fuel to fly for 30 minutes at holding speed at 1 500 ft (450 m) above aerodrome elevation in standard conditions, calculated with the estimated mass on arrival at the destination alternate aerodrome or the destination aerodrome, when no destination alternate aerodrome is required.”
(2 600 kg/h x 30 min) : 60 min/h = 1 300 kg

(vi) additional fuel; and N/A
“(ii) holding for 15 minutes at 1 500 ft (450 m) above destination aerodrome elevation in standard conditions, when a flight is operated without a destination alternate aerodrome.”
(2 600 kg/h x 15 min) : 60 min/h = 650 kg

(vii) extra fuel if required by the commander. N/A
FOR (b)(1) – we have a value of 11 908 kg + 375.7 kg + 1 300 kg + 650 kg = 14 234 kg

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