The 75th percentile performance figures for airborne delay at Perth are indicated in Figure 11. May performance for the median (-0.1 minutes) and the 75th percentile (2.3 minutes) met the targets. Compared to the same month last year, there was an increase in the airborne delay median performance (from -0.3 minutes) and 75th percentile performance (from 1.6 minutes).
The long-term (48‑month) trend for airborne delay at Perth is downwards.
Figure 11: Perth airborne delay 75th percentile (last 24 months)
Table 8 describes the notable airborne delay events during May in Perth.
(minutes – 75th percentile)
(Contributing causes to increased delays)
|23 May||10-11||6.0||Concentration of demand due to late non‑compliant flights and longer than anticipated flight times.|
Table 8: Notable event descriptions for Perth.