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You depart from London Heathrow Airport. Shortly after departure in the climb-out, you realise, that you have to return to Heathrow but you have to dump fuel and advise ATC. Which of the following instructions may you expect from ATC?
  • A
    Proceed to English Channel to make a right racetrack pattern, climb 5 000 ft and start dumping there.
  • B
    Proceed to English Channel to make a right racetrack pattern, climb 6 000 ft and start dumping there.
  • C
    Climb straight ahead until 4 000 ft and start dumping upon reaching.
  • D
    Climb straight ahead an start dumping immediately.

ICAO Doc 4444
15.5.3 Fuel dumping

15.5.3.1 GENERAL

15.5.3.1.1 An aircraft in an emergency or other urgent situations may need to dump fuel so as to reduce to maximum landing mass in order to effect a safe landing.

15.5.3.1.2 When an aircraft operating within controlled airspace needs to dump fuel, the flight crew shall advise ATC. The ATC unit should then coordinate with the flight crew the following:

a) the route to be flown, which, if possible, should be clear of cities and towns, preferably over water and away from areas where thunderstorms have been reported or are expected;
b) the level to be used, which should be not less than 1 800 m (6 000 ft); and
c) the duration of the fuel dumping.

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This question has appeared on the real examination, you can find the related countries below.

  • United Kingdom