The 75th percentile performance figures for airborne delay at Brisbane are indicated in Figure 7. November performance (1.2 minutes median and 3.9 minutes 75th percentile) did not meet the targets. Compared to the same month last year, there was a decrease in the median (from 1.5 minutes) and the 75th percentile (from 5.1 minutes) of airborne delay.
The long-term (48‑month) trend for airborne delay at Brisbane is downwards. However, the 24‑month trend is flat.
Figure 7: Brisbane airborne delay 75th percentile (last 24 months)
Click image to enlarge
(minutes – 75th percentile)
(Contributing causes to increased delays)
|04 November||18-19||3.6||Concentration of demand due to off-schedule internationals and late non-compliant flights during evening peak period.|
|8.0||Concentration of demand during the peak morning period due to longer than anticipated flight times.
Concentration of demand due to off-schedule internationals and late non‑compliant flights during the evening peak period.
|09 November||18-20||6.8||Concentration of demand due to late non‑compliant flights during the evening peak period.|
|17 November||18-19||2.9||Thunderstorms in the evening resulted in diversions to Brisbane from Gold Coast. An on‑demand GDP was implemented for this period.|
|21 November||19-20||6.4||Reduced capacity due to thunderstorm during the evening peak period. Limited arrivals for 30 minutes.|
|5.9||Reduced capacity due to midday thunderstorm. No arrivals for 27 minutes.
Concentration of demand in evening due to flights that experienced departure delays as a result of thunderstorms in Sydney.
|29 November||12-13||3.5||Moderate delay due to concentration of demand was exacerbated by late-notice runway change.|
|30 November||18-20||7.0||Concentration of demand due to domestic flights that took-off more than 10 minutes later than planned.|