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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. January performance for the median (-0.4 minutes) and the 75th percentile (1.6 minutes) met the targets. Compared to the same month last year, there was an increase in the airborne delay median performance (from -0.5 minutes) and an increase in 75th percentile performance (from 1.2 minutes).

Perth airborne delay

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

Distinctive events

Table 7 describes the distinctive events during January in Perth.

Day Event Category Delay
(minutes – 75th percentile)
Event Descriptions
(Contributing causes to increased delays)
15 January Notable 3.4 Afternoon: Wind required use of different runway to forecast with lower rates. No GDP.
16 January Notable 3.6 Morning: Change to single runway operations due to aircraft failure (with hydraulic leak).

Table 7: Distinctive event descriptions for Perth.