Apparently there are lots of problems with the NOTAM system even when it is supposedly working...
“That’s what notams are. They are just a bunch of garbage that nobody pays any attention to.” It would be a dramatic statement regardless of who said it. But this was Robert Sumwalt, chairman of the National Transportation Safety Board, speaking at a hearing. Sumwalt had reason to be upset. An...
That's an excellent summary by an extremely reliable source.
As a former pilot, I used NOTAM's all the time. Fortunately I started flying in the era when before every flight you called a local FAA Flight Service Station (FSS) and a very friendly and intelligent person would tell you the real scoop you needed to know. Later they changed to AFSS ("Automated") which still had real people but they covered a much larger area, so were not as familiar with local issues.
Finally, we almost all switched to DUAT, a fully automated system that would happily print out five single spaced pages 99.5% of which had no effect on your flight at all. I'd show you a few pages but they'd put you to sleep.
And now the DUAT and related airline systems lose their data source, and no one has a clue what's going on and how maybe the runway you're planning to land on is a few thousand feet shorter this week because of construction, which you really might want to know.