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ATM network performance: Perth

Airborne delay

The 75th percentile performance figures for airborne delay at Perth are indicated in Figure 11.

March performance (-0.3 minutes median and 1.8 minutes 75th percentile) met the targets. Compared to the same month last year, the airborne delay median performance was unchanged and 75th percentile performance increased (from 1.3 minutes).

The long-term (48-month) trend for airborne delay at Perth is downwards and 24-month trend is steady.


Figure 11: Perth airborne delay 75th percentile (last 24 months)

Notable events

Table 9 describes the notable airborne delay events during March in Perth.

Day Local Time Delay

(minutes – 75th percentile)

Event Descriptions

(Contributing causes to increased delays)

05 March 18-19 4.7 Concentration of demand due longer than anticipated flight times during period of reduced capacity (single runway operations continuing longer than planned).
19 March 10-12 6.3 Concentration of demand during late morning peak due to early non‑compliance.
20 March 10-11 6.2 Concentration of demand during late morning peak due to missed approach and rescue flight.

Table 9: Notable event descriptions for Perth.