mmmmm.........
Should not have happened.
It's also very easy to click on the wrong forecast or for someone to upload the wrong file on to the server so it's as well to check the date on the result before relying on it.
If anyone spots anything like this please call the AIS Duty Officer (H24) on 020 8745 3450/3451
The question of how many people still check is a worry, especially following the case of the Red Arrows TRA infringement, which is reported to have cost £600 in costs and fines.
I believe AIS2Plot is a third-party link between Ian Fallon's NotamPlot and the contingency PIB's, not produced or supported by Ian, who I understand has recently been in the throes of changing jobs.
Briefs on the main AIS site (
www.ais.org.uk) are extracted on demand from a replica of the main AIS database. The main and replica servers are co-located and connected to each other so the replica server is continuously updated. The contingency PIB's are however held on the main NATS server and are updated twice a day. The AIS site is therefore always going to have the most up to date info.
The main advantage of this arrangement is that it is most unlikely that both the AIS and NATS servers will fail simultaneously.
The added complexity of producing PIB's by querying the main database on request does require the user's browser to be compatible. Having the NATS site available also means that someone with an incompatible browser can still get the NOTAM.
Mike