1.205 Tailwind landings by threshold level

DESCRIPTION:

​Percentage of landings where the tailwind exceeded 5, 10 or 15 knots (kts).

STRATEGIC OBJECTIVE:

Aviation Safety

INDICATOR TYPE:

Outcome-related (Reactive or Lagging)

RATIONALE:

​Tailwind landings increase the risk of a runway excursion. The ground speed at touchdown will be greater than usual and any float tendency will result in a long landing. The increased stopping distance could result in a runway overrun (excursions).

LIMITATIONS:

​This indicator is applicable only when both the aircraft and the airport are equipped and covered by automatic dependent surveillance – broadcast (ADS-B).

CALCULATION METHOD/FORMULA:

Tailwind component tailwind = wind speed in kts x cos (wind direction – runway direction)

REFERENCES:

1.205 Tailwind Landings by Threshold Level.pdf