I guess we should expect chaos today with the winds. On the 9.30pm from Sydney to Brisbane. How has Sydney been dealing with the curfew issue lately on bad days?
Like all of us I don't always see what happens when the clock strikes 2300 hours.
It appears since the Federal Coalition Government was elected - at least for the last 18 months, as I can't recall before that - there's been far fewer aircraft not allowed to land after curfew. In other words, 'more tolerant': a greater willingness for 'the delegate' (of the Minister) to grant dispensations.
IIRC, while it's a few years ago, when Labor was in office, many more applications for an exemption were refused, as in theory an operator must satisfy three criteria. I don't know if this was partly because Labor nearby holds Sydney seats such as Granydler (Anthony Albanese MP, who in 2019 is Leader of the Opposition.)
For departures, AFFer and aviator jb747 reminded us a few months ago that under the Sydney Airport legislation, provided an aircraft has ATC permission to taxi by 2245, it can basically then depart at any curfew time. IIRC, the usual rules apply as in no takeoffs to (or landings from) other than the south, so as to supposedly minimise noise emissions.
The most recent curfew dispensations report was tabled in Federal Parliament in February 2019.
It shows a very large number of dispensations for passenger (and some freight) aircraft:
The latest approved passenger arrival (touchdown, not arrival at gate I believe) I could find was 2346 hours, 46 minutes after curfew.
For departures, there was one instance (QR) where an international aircraft took off at 0040 hours, 100 minutes after the supposed curfew. As one would expect, most were for 2330 or before.
One wonders if local residents in Sydney believe this immense number of dispensations (including some contravening which runway ought be used) make a mockery of the Sydney Airport legislated curfew.