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An aircraft has a maximum certificated take-off mass of 137 000 kg but is operating at take-off mass 135 000 kg. In Item 9 of the ATC flight plan its wake turbulence category is…

  • A
    medium “M”
  • B
    heavy/medium “H/M”
  • C
    heavy “H”
  • D
    medium plus “M+”
ICAO Doc 4444
Air Traffic Management (PANS-ATM)
4.9.1 Wake turbulence categories of aircraft
4.9.1.1 Wake turbulence separation minima shall be based on a grouping of aircraft types into three categories according to the maximum certificated take-off mass as follows:
a) HEAVY (H) — all aircraft types of 136 000 kg or more;
b) MEDIUM (M) — aircraft types less than 136 000 kg but more than 7 000 kg; and
c) LIGHT (L) — aircraft types of 7 000 kg or less.

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