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The navigation plan reads:

Trip fuel: 100 kg 
Flight time: 1 h 35 min 
Taxi fuel: 3 kg 
Block fuel: 181 kg

The endurance on the ICAO flight plan should read.

  • A
    2 h 49 min
  • B
    2 h 04 min
  • C
    2 h 52 min
  • D
    1 h 35 min
ITEM 19 - Endurance
After E/ INSERT a 4-figure group giving the fuel endurance in hours and minutes.
  • Fuel Endurance in Item 19 of ATC Flight Plan is for Search Radius, in case an Aircraft is reported missing or overdue. It must be the Total Fuel Endurance of the Aircraft, and must take into account the Total Fuel On-Board - it is the time the aircraft can remain airborne, and, therefore, includes all usable fuel onboard (including any reserves). However, it does not include taxi fuel.
  1. Calculate the Fuel Flow:
    Fuel Flow = Trip Fuel / Flight Time
    Fuel Flow = 100 kg / 1h 35 min = 63.16 kg/h
  2. Calculate Total Fuel onboard at take off (excluding Taxi Fuel):
    Take-Off Fuel = Block Fuel - Taxi Fuel = 181 kg - 3 kg = 178 kg
  3. Calculate Endurance:
    Endurance = Take-Off Fuel / Fuel Flow = 178 kg : 63.16 kg/h = 2 h 49 min

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