In its past six flights QF63 from SYD to JNB, the 1055 hours B744 has arrived 11 minutes early but on every other occasion has been delayed, sometimes by more than an hour.
Today repeats this familiar pattern with pushback expected about as I write, at 1145 for arrival 55 late at 1755. This will mean the 1910 hours ex KNB QF64 cannot depart until at least 1940 tonight local time.
As it has today (B744 VH-OEJ), often the aircraft arrives in SYD on QF74 ex SFO but even with a gap of a few hours until 'the 63' is due to depart, is unable to punctually push back. On one occasion when I was in SYD to observe this, the aircraft had to be placed at its aerobridge but surely on most occasions a '74 to 63' rotation would see the aircraft remaining at its gate after arrival and not koving until off blocks with 'the 63'?
QF97, the 1010 hours morning flight from BNE up to HKG is expected to push back at 1330 this afternoon with arrival at 2040 hours, 195 late.
UPDATE: With QF63 at cruise, the QF computer has revised projected JNB arrival to 1825, 85 late so on that basis 'the 64' won't be pushing back until roughly 2010 hours, an hour behind.