ASMA Additional Time Dataset

Data description

The additional ASMA time is a proxy for the average arrival runway queuing time on the inbound traffic flow, during congestion periods at airports.

It is the difference between the actual ASMA time of a flight and a statistically determined unimpeded ASMA time based on ASMA times in periods of low traffic demand.

When monitoring ASMA performance at airports, it is important to note that the goal is not to reduce ASMA time to the unimpeded reference time - as this could negatively impact on runway throughput - but rather to reduce additional ASMA time and associated fuel burnt to the necessary minimum.

Column naming and types

Column nameData sourceLabelColumn descriptionExample
YEARNetwork ManagerYEARReference year2014
MONTH_NUMNetwork ManagerMONTHMonth (numeric)1
MONTH_MONNetwork ManagerMONTH_MONMonth (3-letter code)JAN
APT_ICAOPRUAPT_ICAOICAO 4-letter airport designatorEBBR
APT_NAMEPRUAPT_NAMEAirport nameBrussels
STATE_NAMEPRUSTATE_NAMECountry in which the airport is locatedBelgium
ASMA_RADIUSPRUASMA_RADIUSThe radius around the airport (in NM) used for the ASMA calculation40
FLT_ASMA_UNIMP_2NM_AirportIFR flights with unimpeded reference time7290
TIME_ASMA_UNIMP_2NM_AirportTotal unimpeded reference ASMA time in minutes60081
TIME_ASMA_ADD_2NM_AirportTotal additional ASMA time in minutes15175

Calculated Field(s)

\[ \begin{align*} \text{Average additional ASMA time} & = \frac{\text{TIME_ASMA_ADD_2}}{\text{FLT_ASMA_UNIMP_2}} \end{align*} \]

\[ \begin{align*} \text{Average unimpeded ASMA time} & = \frac{\text{TIME_ASMA_UNIMP_2}}{\text{FLT_ASMA_UNIMP_2}} \end{align*} \]